Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d246b7bedc6fd09…

MALICIOUS

PDF

82.9 KB Created: 2021-04-09 21:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ba2351cf8ca3067c146c588d640e4062 SHA-1: 75738207f6c465a9b87fa82c7d5621be426e8129 SHA-256: 9d246b7bedc6fd099fd19b840975f4a50a235d90723774a3c3c5b18a98ca0fe6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 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://ponafet.ru/strik?utm_term=best+politics+books+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379855/normal_606e43a948576.pdfIn PDF document text
    • https://cdn.sqhk.co/dizukenepu/hajegf9/excel_vba_declare_worksheet_object.pdfIn PDF document text
    • https://vipozuguru.weebly.com/uploads/1/3/1/4/131483083/6140989.pdfIn PDF document text
    • http://choosenews.space/preschool_books_about_life_lessonstul5b.pdfIn PDF document text
    • https://woziwunamewig.weebly.com/uploads/1/3/1/6/131606321/munogu.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/Mii8n39/80652106506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_603e2e471697d.pdfIn PDF document text
    • https://lupemofuxuxutuj.weebly.com/uploads/1/3/1/3/131383332/ae6c56b6a24aa.pdfIn PDF document text
    • https://cdn.sqhk.co/pigujoxexate/dhjLhie/45398182644.pdfIn PDF document text
    • https://zanefasijim.weebly.com/uploads/1/3/5/9/135965469/zudamexodozukafomew.pdfIn PDF document text
    • http://figejewumoposes.getenjoyment.net/fafebukedetoxetelume.pdfIn PDF document text
    • http://xuxikurov.mygamesonline.org/arthritis_back_exercises.pdfIn PDF document text
    • http://mediaverifiedbadge.com/funanutoworedoditepiwutg15vn.pdfIn PDF document text
    • https://vujojetusifej.weebly.com/uploads/1/3/1/3/131398487/d16c9c.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/sEhjajb/gagarijabevupip.pdfIn PDF document text
    • http://smm-target.ru/763055134382escd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuminexozuvino.atwebpages.com/20516544725.pdfIn PDF document text
    • https://e942959e-95af-4115-ab05-a6e38533eaad.filesusr.com/ugd/66f7a0_27b426456c844aca8184ecd2c8d177e2.pdf?index=trueIn PDF document text
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_b9eaae494bcf4a458730efca8a438c9b.pdf?index=trueIn PDF document text
    • http://betakudo.atwebpages.com/ancel_fx2020.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_off0001088b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088B 5148 bytes
SHA-256: 87e8424d279f72ec84e07fd6e2dd2841a9733dfbdea6891e69f76ef443a1cc3c
font_01_sfnt_off00011a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2C 10924 bytes
SHA-256: ae29ccb8f13a53682490ced18d922071027f4392cb68dde10ff6e2341fc73568

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