Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00e97e0ce8c84ac…

MALICIOUS

PDF

78.5 KB Created: 2021-01-09 23:23:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 5cc49d251edefbadb96fbad280be4b79 SHA-1: 8677ade9d022b4ecaa39ca592b4c11280f0f8ea2 SHA-256: e00e97e0ce8c84ac340517ba9c1dd5d2eff9a05e06a05f122303f8cd0835cc4e
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM detection and ClamAV's Pdf.Phishing.Trojan signature. It contains a large number of external links, many hosted on Weebly, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous external links and the phishing/trojan detection suggest the document is designed to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://trafffe.ru/aws?utm_term=autonomous+robot+vehicles+pdf PDF link annotation
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/vevewano.pdfIn PDF document text
    • https://sozuxope.weebly.com/uploads/1/3/4/8/134873608/2431188.pdfIn PDF document text
    • https://gurogujanesoxub.weebly.com/uploads/1/3/4/5/134506981/tufuwodejur_xigizorugukeled_zaduzo_mafezazasel.pdfIn PDF document text
    • https://zojevobe.weebly.com/uploads/1/3/1/1/131163992/zeredebejemek_tafakutasebojuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383340/normal_5fc922e148d14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500887/normal_5fcec2a874310.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368468/normal_5fc914ce92334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_5fc1894d1cab7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464529/normal_5ff26c1864073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462344/normal_5fc2cdf15f853.pdfIn PDF document text
    • https://wanuwajazil.weebly.com/uploads/1/3/4/8/134899981/1174a.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/juduk/bloons_td_6_apk_7.1.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/kavanudidipoj.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_off0000f5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C8 5372 bytes
SHA-256: e427a27c1e0c0015499898d473f16e4e42215abc37f24eba04b71ea4b6e5ee9a
font_01_sfnt_off000107ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EC 10968 bytes
SHA-256: eb74950588a5bf04b3b970afca56a28c7b8c1ce706119db2a8eb67ec87bcb148

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