PDF malware analysis — malicious · d7d5bc60c63fda8a

MALICIOUS

PDF

75.4 KB Created: 2021-08-19 07:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: a85345a5e942653a5c74743f6a0a5093 SHA-1: 1a02807b1a18ce64b45145d81dbda36c7b365e4e SHA-256: d7d5bc60c63fda8acd875f07e1d60821856daccc575f3683b0bfae25422d06e0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories, suggesting an attempt to redirect users to malicious content. The presence of these links indicates a likely phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9914

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://huntic.ru/uplcv?utm_term=el+don+del+aguila+carlos+castaneda+pdf+gratis PDF link annotation
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161078da999979---43275148356.pdfIn PDF document text
- http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4421dc251---xulope.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e29d6a55ed1---tovevenezugonupe.pdfIn PDF document text
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de88f6e3c94---66165629653.pdfIn PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a43e3ee9b9b---jitorufiwibi.pdfIn PDF document text
- http://slbreakingnews.com/ckfinder/userfiles/files/26374181505.pdfIn PDF document text
- http://tanriovermensucat.com/uploads/genel/files/14582918441.pdfIn PDF document text
- http://anpo.vn/upload/files/zujupobidune.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/008fcb26754a9c1ae0f1d55c45c88d7b/pivubulabiduvoxekomovojok.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e659031e8---42058946006.pdfIn PDF document text
- http://www.jindatunnel.com/up_files/file/jasibimin.pdfIn PDF document text
- https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/a5a59efe340469ca5e48eda4607da5c7/78547747507.pdfIn PDF document text
- https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/18a4365de87af2075fc4c5c97c69bef8/33270108513.pdfIn PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/9e6af82b0848a26ec00ca468e08a4356/tudewovipefoka.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111c57eb266c---kapafodazabaxusarasozis.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091fbccbc951---20756147061.pdfIn PDF document text
- https://dm288.com/slicice/file/82253736648.pdfIn PDF document text
- https://acryl-bg.com/userfiles/file/51481125714.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/b3d65fff7bb59afbc5cacfdb3e7c51ab/13741530470.pdfIn PDF document text
- https://travelsafeway.com/userfiles/file/66516599909.pdfIn PDF document text
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/73af0b0bd856314e4ba6f2e2a02700e6/64870617049.pdfIn PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/0ceb51851f0b21c70dcdd54eb5d07523/pibiluboxuku.pdfIn PDF document text
- http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/29301602635.pdfIn PDF document text
- http://moveworldtogether.com/datas/files/vijarujejomerabakolo.pdfIn PDF document text
- https://smallislandcurry.com/wp-content/plugins/super-forms/uploads/php/files/d12e8885ceb4db91556a93490eca3daf/jiraku.pdfIn PDF document text
- https://forumhrdbekasi.com/webroot/userfiles/files/87210397856.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_off0000c339.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC339	17032 bytes
SHA-256: `1968869c652049c920863e954f4a68e44e638c357453bf35c7ebec838fea4f3d`
`font_01_sfnt_off0000ee4f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE4F	10880 bytes
SHA-256: `ca61d5876c9196c177e5c9f3c2470a5ad0c548202cfc78683282965c22f90063`
`font_02_sfnt_off00010753.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10753	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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