Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aeb7ac4379e5f2f…

MALICIOUS

PDF

65.6 KB Created: 2020-11-25 04:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a20a433a5f204cf800fd667102e06905 SHA-1: 29c1dfaddb796d3b9e3c1110c48386e4c2e31312 SHA-256: 2aeb7ac4379e5f2f085ca894ea6a78634fd1e23debdd2bee05287b3ae8edea7d
156 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. 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 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.
  • 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://traffnew.ru/123?utm_term=the+resurrectionist+eb+hudspeth+pdf PDF link annotation
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdfIn PDF document text
    • https://mazovibodekimiv.weebly.com/uploads/1/3/4/3/134398511/b34890.pdfIn PDF document text
    • https://lirutuve.weebly.com/uploads/1/3/4/4/134462413/6389101.pdfIn PDF document text
    • https://rijejoxutozi.weebly.com/uploads/1/3/4/5/134599637/masalop_xunoso.pdfIn PDF document text
    • https://mokogexikimowo.weebly.com/uploads/1/3/4/3/134321985/7319225.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/bitajemisajoz/katy_rice_fest.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/duzisizoburukupafixasaj.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/anganwadi_form_online_delhi_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec53476-caee-4ec5-8e9b-67367428ce8e/netapp_fas3020_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/experian_uk_business_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/48482204415.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/xezukex.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/harbor_breeze_dual_fan_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/animal_farm_questions_and_answers.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_off0000c470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC470 5092 bytes
SHA-256: 6d91e4f726ef6459b196a5d4c953ea75dc6af1c4389fe820f0cf028d2e873749
font_01_sfnt_off0000d5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B7 10584 bytes
SHA-256: 18912eb31378de3f056566a93cf4ee722725688a52c8e799a07c0a457ae5bc2f

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