Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7f6621647eec6b…

MALICIOUS

PDF

86.0 KB Created: 2021-02-18 18:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f6388a1960446b4cbdb8c72974503402 SHA-1: 694a714280af4cc615235c569b49a7f541752f3f SHA-256: 9f7f6621647eec6b6c374943f3e1dff9e35c9c57b033e424dce67ec8fd7ce1e6
164 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to drive traffic to malicious sites. The presence of an external URI and numerous embedded URLs further supports this. ClamAV detection and ML classification indicate malicious intent, likely related to phishing or malware distribution.

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://baarspo.ru/strik?utm_term=graco+click+connect+35+car+seat+height+limit PDF link annotation
    • https://cdn.sqhk.co/lomokubaf/jfjYgjh/guvolozojuferikod.pdfIn PDF document text
    • https://wajonurogizi.weebly.com/uploads/1/3/0/7/130738566/2824310.pdfIn PDF document text
    • https://sotokogel.weebly.com/uploads/1/3/4/2/134266154/lerudovaxanu.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/sopelevagakuso-juxanilalige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446492/normal_600301f13b0cc.pdfIn PDF document text
    • https://waxaveroguwako.weebly.com/uploads/1/3/5/3/135344917/jogofomuziriv.pdfIn PDF document text
    • http://xegafutulon.iblogger.org/making_inferences_worksheets_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/jagfjge/64101000485.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/megujobemegor/devourer_arahakan_hell_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/xuzitujivak.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/92422486483.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/consumer_reports_vacuum_canister.pdfIn PDF document text
    • http://dobupefibukin.epizy.com/california_dreamin_clarinet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/nuvobitegebomevapifega.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_off0001130f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130F 5596 bytes
SHA-256: c3a91c388be72eab50e629d14cacdc76c5619c959bebd88ab1e7bb5c4b8fb325
font_01_sfnt_off000125ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125EF 10820 bytes
SHA-256: fe0e1113dd13155d1b8bd428ff4f2324d94992e3e50b76202ddaf66fbe68965f

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