Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c795e55679616c9…

MALICIOUS

PDF

71.5 KB Created: 2021-03-05 16:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be331e549d09971bdce73eed7c40ff38 SHA-1: ee7351693ee50413ebf959956c817a230a85a5e0 SHA-256: 7c795e55679616c9804312b4a84d97a81acf44d25c6589be4698a0ec803294ee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with the primary one being 'https://maypoin.ru/wix?keyword=virtual+rat+dissection+guide+answers', suggesting a lure to a phishing site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate it's designed to redirect users to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=virtual+rat+dissection+guide+answers
    • http://tijukilebag.getenjoyment.net/73544830182.pdf
    • http://sellforce.ru/real_followers_5000_apk_unlimited_coinsxl8w5.pdf
    • http://crispyset.online/html_and_css_book_reviewb86pp.pdf
    • http://vienvozvrat.site/62028509347j91qt.pdf
    • https://static.s123-cdn-static.com/uploads/4476566/normal_5ff12ed1af3c4.pdf
    • http://pupunorip.getenjoyment.net/the_strangest_secret_summary.pdf
    • http://bitcoins-profits.com/964849660558qb5j.pdf
    • https://static.s123-cdn-static.com/uploads/4426810/normal_5fe6023c5114f.pdf
    • http://matawobedopikam.mywebcommunity.org/8375282453.pdf
    • http://fajujefa.getenjoyment.net/34235885163.pdf
    • http://psylath.com/carport_plans1wi1r.pdf
    • http://rezonansmusic.com/benim_hocam_yks_matematik_ders_notlar1k2en.pdf
    • http://leaninrzpd.site/gizezeveduludyojfm.pdf
    • https://cdn-cms.f-static.net/uploads/4475376/normal_600a0765c95fb.pdf
    • http://teksol.xyz/places_to_fix_car_air_conditioning_near_me05jwn.pdf
    • http://konalofasu.mywebcommunity.org/20584229458.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wibedubosateg/99583812658.pdf
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_577a246e84f244ac8b23f93ba3f66433.pdf?index=true
    • https://s3.amazonaws.com/patotale/stephen_king_hardcover_collection.pdf
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_8aa1fe25c3ff440e804cf7cf1b71a25b.pdf?index=true
    • https://s3.amazonaws.com/kudefem/bovevefubag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db4f.bin
a211243703310e4fee8b9f1bbc91864ab37ad1963d93d0f9db0d34a7737e5d3d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4F 5164 bytes
font_01_sfnt_off0000ecfe.bin
5907c1dba538a065b05a282393abcbb8c340882f7350ef8f4982ab4d14229afd
pdf-font-stream PDF embedded font (sfnt) at offset 0xECFE 10500 bytes