Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c25024d4096bc8…

MALICIOUS

PDF

299.6 KB Created: 2021-05-28 07:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ae3f79541ab8c14f9d8a833968227484 SHA-1: 1cc196bf270b7e1d58fbdc64b0b180513d89a5a1 SHA-256: 77c25024d4096bc8e54716bb28ed6f1778cc3cc786d19530fc1728c219881854
104 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. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/strik?utm_term=warhammer+40k+kill+team+rules+pdf+download PDF link annotation
    • https://bufopajej.weebly.com/uploads/1/3/5/9/135956722/8579284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490936/normal_606acd784c4c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487665/normal_5fde7fb17371b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475988/normal_6004c2ba2b558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_603351cdcec31.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4375525/normal_60b0417994fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472481/normal_600e47eab2390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493917/normal_6068285041226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_6034813d741a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387417/normal_6067ef9c5fafc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5fe6336fbaee9.pdfIn PDF document text
    • https://tokawokemiw.weebly.com/uploads/1/3/4/7/134730305/dadiwoxezanone-sofusibase.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_603a72e560ef7.pdfIn PDF document text
    • https://rewazuxaroro.weebly.com/uploads/1/3/4/3/134341361/eeea5b05dc.pdfIn PDF document text
    • https://lejonelawubuw.weebly.com/uploads/1/3/1/4/131453657/dojuwawefewabonidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489839/normal_603ae66a85c2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0004631f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4631F 5680 bytes
SHA-256: 7713d43e1c7cbfdfb02ae1eca5c0d3e51cd51a706a3e2bce18f077f9593db8cf
font_01_sfnt_off0004766d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4766D 12180 bytes
SHA-256: 89458746859161356941b3a4a5ef9f5087b0456a1043faa50ed6933c33410b92

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