PDF malware analysis — malicious · ac2b3be303ac5c9a

MALICIOUS

PDF

85.7 KB Created: 2021-09-01 07:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 23c72eb5accbdf79359bbc36a89b0fd4 SHA-1: 5d65d5d46a30fae2b7e5a72b5723876fcb26828b SHA-256: ac2b3be303ac5c9a93285697f0bcc09a5b22ba183b6db5d9bea0aad51f166f62

216 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to trick users into revealing sensitive recovery secrets or private keys. Numerous URLs are present, many hosted on compromised CMS uploads, suggesting a phishing campaign aiming to redirect users to malicious sites for credential harvesting or further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

Heuristics 7

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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.
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://pistant.ru/uplcv?utm_term=nft+meaning+in+crypto PDF link annotation
- http://heyumpnd.com/userfiles/file///xizibofitomikasiterudaj.pdfIn PDF document text
- http://odesignlab.ru/admin/ckfinder/userfiles/files/walaforojixanazowidegunij.pdfIn PDF document text
- http://www.cerathai.com/image/upload/File/43312880641.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160885556c92d5---botufomozabegimivina.pdfIn PDF document text
- https://itacademyindia.com/ckfinder/userfiles/files/75819677233.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/88771567958.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/3f273fb5e2b94bcf3d3a81a924cd376c/58780998347.pdfIn PDF document text
- http://ahkjt.com/upfile/file/tegusozisirixigufoj.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/b0hmgaaurq37ofpoktco26erjb/juvajimamewijawokigu.pdfIn PDF document text
- http://werder-ritter.de/UserFiles/File/23120345117.pdfIn PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/9688f2100495f901aab47eb1824e7fd0/29374494641.pdfIn PDF document text
- http://abaj.cz/UserFiles/File/danugepipesineweturom.pdfIn PDF document text
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e597141783---dupiko.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/ac06372cfd175e57e84b718647f78617/13684591584.pdfIn PDF document text
- http://chiari-web.com/ckfinder/optimist/files/99472317362.pdfIn PDF document text
- http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/zufavunidiwu.pdfIn PDF document text
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca3cd6a9752---xepeduziwore.pdfIn PDF document text
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/cb41ebf317ab300b76b49badf343252c/zifowewafogomibo.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9b4085847---7216162579.pdfIn PDF document text
- https://aljazeerahdrilling.com/userfiles/files/pegomikufa.pdfIn PDF document text
- https://zifu-tech.com/app/webroot/userfiles/files/9223074223.pdfIn PDF document text
- http://domeinbeverdonk.be/assets/files/file/9131154891.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/70739519721.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_off0000e771.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE771	10700 bytes
SHA-256: `dd0db045229191a0818b71b43cbdf2f10840d5e4b947543c78d6e5017b5d11f6`
`font_01_sfnt_off0000ffff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFFF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011811.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11811	17752 bytes
SHA-256: `3068875eb13baf3542d02c9051bc874adc9aa6abcf96ba7dc89741f67f8add8c`

Open this report in the interactive analyzer, or submit your own file for analysis.