Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9c56cee124ce11…

MALICIOUS

PDF

171.7 KB Created: 2021-03-02 13:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1f7f3f54649ac81b47d9c540242eaea5 SHA-1: addce429d66694ea462b1a51342deb070eb36bbd SHA-256: 9e9c56cee124ce11de6fc50ccdc22531801f2c9680e4d4bd17d1e546b950b4a1
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates the document is a link farm hosted on disposable domains, suggesting a phishing or malware distribution campaign. The embedded URL `https://ponafet.ru/wix?keyword=bernard+montgomery+facts+ww2` is a primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=bernard+montgomery+facts+ww2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451940/normal_5ff9bba9e2441.pdfIn PDF document text
    • http://eroganoficial.site/barbie_dreamhouse_adventure_hack_mod_apkzejuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403679/normal_60130c2fa1a86.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/39707028785.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/dapawuve1skp.pdfIn PDF document text
    • http://koprovk.xyz/serenogevagaranirelovup2fq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463308/normal_6031019c11dc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471256/normal_602641f925fda.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/34027121402.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474448/normal_5fe097ab31a2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468289/normal_602a28c50c136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_603d23b0c3732.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/17745088246.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/white_fang_1991_full_movie_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ragasusivoreta.epizy.com/firupupugitugos.pdfIn PDF document text
    • http://xamelolupete.epizy.com/domufajizividekonexe.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/singer_quantum_stylist_9960_price_in_pakistan.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2602E 5684 bytes
SHA-256: b10fe61f0eddf1d6fb3c602ebcc992170e79454612b48cbeeea1167f1accb65b
font_01_sfnt_off00027398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27398 13460 bytes
SHA-256: 8aa1b04a463f6626877d45a960e062a56bff118cf4632fecb9b752b36b55939b

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