Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c69279a2c25256…

MALICIOUS

PDF

103.0 KB Created: 2021-05-05 21:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 2ee37f62569ca8224aa5991c2285a5e5 SHA-1: 02cab89085ce31f51eaf17ccf140c07fa9e38f76 SHA-256: 01c69279a2c25256c71a67403ff068ee5065346df8819465a0c7c9ad8f397fca
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a UTM parameter in one URL indicates a potential tracking or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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.
  • 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://jacksth.ru/strik?utm_term=how+to+install+first+alert+9120b PDF link annotation
    • https://liloxowilobo.weebly.com/uploads/1/3/4/2/134265539/841306.pdfIn PDF document text
    • https://xifofenanupov.weebly.com/uploads/1/3/4/8/134857182/gimipukugemevej-magevogigitiser.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420911/normal_606606854320f.pdfIn PDF document text
    • https://wesojejupeledaw.weebly.com/uploads/1/3/4/4/134446418/rafupaluzuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369645/normal_605c7157d7679.pdfIn PDF document text
    • https://rinalodejivew.weebly.com/uploads/1/3/4/3/134383373/4971845.pdfIn PDF document text
    • https://zalevetupuxigex.weebly.com/uploads/1/3/0/7/130739655/zivuboburijuz-sapuni.pdfIn PDF document text
    • https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/5419708.pdfIn PDF document text
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/a0192c082e2.pdfIn PDF document text
    • https://putoluvutawubu.weebly.com/uploads/1/3/1/4/131437806/9357649.pdfIn PDF document text
    • https://wonumajogo.weebly.com/uploads/1/3/1/3/131379434/fenifu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470972/normal_601fd9958c2ea.pdfIn PDF document text
    • https://tewenamizudeko.weebly.com/uploads/1/3/0/8/130873709/759455bec8ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_6017fa59cad23.pdfIn PDF document text
    • https://vuzivofe.weebly.com/uploads/1/3/0/9/130969370/2055952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404310/normal_605c5df541a7e.pdfIn PDF document text
    • https://fimiximokizo.weebly.com/uploads/1/3/1/3/131384127/6076056.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_11852870c76f4081b2f1c97af092a2b0.pdf?index=trueIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_ef753a9058b04bbaacc744172f2e9b2a.pdf?index=trueIn PDF document text
    • https://bc732cde-fb09-4fee-8ab5-c82a45a1131b.filesusr.com/ugd/2ac701_90a537f8e3c24da6bf9be3f9e30f869f.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_f340fdfad72243cdb9d1e5b1c8734cd0.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130B9 5224 bytes
SHA-256: f56da5cb8a7403d592a55c864c74f290a34f70a25ae04aebfc6748600f8c5406
font_01_sfnt_off00014289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14289 11360 bytes
SHA-256: a06c029f36c5d3c95518773e0b4c68fe6464783f81ad62cb82965f6c8502e6e9
font_02_sfnt_off00016966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16966 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449
font_03_sfnt_off00017e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E95 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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