PDF malware analysis — malicious · f6fd8715be86648b

MALICIOUS

PDF

86.9 KB Created: 2021-06-26 17:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 7c54fe2f172a7af009995552cbaa7b1a SHA-1: d4da1c52021a757ea74f2803dd9734fdfaab728f SHA-256: f6fd8715be86648b51b2e9aacb6b8b334ae9db4b89b74427d065b0665523a5ef

204 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and a machine learning classifier, indicating a phishing or trojan payload. The document contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The presence of a 'password-protected archive' lure heuristic strongly suggests the document is intended to trick users into downloading an encrypted payload, likely a secondary stage malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

Heuristics 8

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://coretry.ru/uplcv?utm_term=how+to+password+protect+a+pdf+file+in+adobe PDF link annotation
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/d7119669585f5ff4d69a0e91ea8bd7ae/82089147707.pdfIn PDF document text
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3dbbed4312---99801484851.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b4e71947b---36770056890.pdfIn PDF document text
- http://chono.mn/uploads/userfiles/files/75649895023.pdfIn PDF document text
- http://andlupa.com/userfiles/file/90245679401.pdfIn PDF document text
- https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/7de631de306cec9da3e9620b9b7b6be2/vubimabu.pdfIn PDF document text
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/4ae068c5f7de3593bebb1fb76422740d/21707180763.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c16e0ccf9---pagazulekovefo.pdfIn PDF document text
- http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1609f020c3e44a---vuketisedibogewakijo.pdfIn PDF document text
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/nojuwikinitazegexovik.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098e2f651bf3---45408242370.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607595ff404f9---98197342087.pdfIn PDF document text
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/912f924b25af9b93bac85a7b9034606e/35264800626.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/46a75834903871666b14a8ccc544619a/zilamix.pdfIn PDF document text
- http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a305beb0dae---porawadidegavugufav.pdfIn PDF document text
- https://people11people.com/uploads/File/fiwaranijozuritan.pdfIn PDF document text
- https://burstallconrad.com/editor_files/file/57007025638.pdfIn PDF document text
- http://synerfreight.com/syner_upload/images/files/66845858483.pdfIn PDF document text
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/mokojinobomonudujutetage.pdfIn PDF document text
- http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/gahttnc4ehaf6136pi7b2abn4k/labefexabatisimufo.pdfIn PDF document text
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/669b3194203d5e07b785ec85d5892213/9199401040.pdfIn PDF document text
- https://khabul.mn/mmpa/userfiles/files/98031796682.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a661ab3c591---falijazesekeveladeviwiluv.pdfIn PDF document text
- http://gloucesterclassof81.com/clients/23558/File/pupuvutavuxemisunutasu.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/r3uoqnp3hvlkf1l86s35sbd646/86691358468.pdfIn PDF document text
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a16d2425856---88896430092.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eeca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEECA	10832 bytes
SHA-256: `0a82b0c59db71b9a4f3069ecfdc69d79877f2350c93d4b3b12f0a30aa58457e2`
`font_01_sfnt_off000107b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107B2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011fc4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FC4	17232 bytes
SHA-256: `527e332ee9e358c7fcfd9178b03595cf103cdae955e0ccf9c50e33c9bf9a1700`

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