Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1782ffb84a09ea8…

MALICIOUS

PDF

68.3 KB Created: 2020-11-18 16:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 82674271dd1b784ab98367ad37ead806 SHA-1: d9828fca77a48adc0adb1dfe9417e43d753c3073 SHA-256: e1782ffb84a09ea88f97cc3c61405e6647f21e996553965613813a8401486dd3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/strik?utm_term=windows+10+different+wallpaper+on+ea PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5fa482e2f1b5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_5f97b69f2eb9d.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/doredezugebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_5f9f23ffefac9.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/7c698867002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417805/normal_5fa9cde30e6b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f90f01d40994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409238/normal_5fb2ef335c8b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5fb48a417d1a3.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/vozokof-tudos-pesakej-gasewefo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vokeri/vofakuzazosuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a06161f-fac5-44fe-bdd1-8c3a5ee9294d/95061975090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8cf559b-335b-49b3-9f79-16f0a1227b40/29408572221.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA2 5336 bytes
SHA-256: 69a9f8fb0ebe8bc46d78d7a500c7d8884d4793d91bc16b32a3322fe6caff0c4b
font_01_sfnt_off0000dff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF8 10704 bytes
SHA-256: e637db45594cb1a366f48e9147982addb6377756f7b74bc39572f6bee65d4fe2

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