Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e5a34ed63966c6…

MALICIOUS

PDF

65.2 KB Created: 2020-11-16 16:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3ed1ab9e82730700f1b688c8e66a2e57 SHA-1: 5c6b00bb7fbd211a013178122b6d41d676417f50 SHA-256: f8e5a34ed63966c6297df44cdef7c5dabd7f8515fe6fe5862ba5c98cf9686c57
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://trafftec.ru/aws?utm_term=casio+edifice+5303+era+200+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5faf90fa03ece.pdfIn PDF document text
    • https://jejoduruledeg.weebly.com/uploads/1/3/4/3/134396934/07fa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5fa27faf7b7b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f90032f2a177.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_5f9c9d6cc6da2.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/b2824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5fa8995c66e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_5fa5b095d3cd0.pdfIn PDF document text
    • https://gilolubirej.weebly.com/uploads/1/3/4/3/134309297/tenikisar_tapubi_lazapepe_tafalibefekusep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370074/normal_5f8b232e5c016.pdfIn PDF document text
    • https://zorelivuveromip.weebly.com/uploads/1/3/4/4/134438733/jamirasok.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/3240f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459623/normal_5fa3c8d0130e5.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/wazotojemov/chica_fnaf_1_face.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/71606199424.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_off0000c0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C7 5632 bytes
SHA-256: 9a2077a08cc5070eee57b9c94362414c2a8d7dce97af37cc528e79fe5fa5601d
font_01_sfnt_off0000d3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D8 10540 bytes
SHA-256: e51f46b41642d47f176642132e1c7793d75dbe8b5e5c2ca0a0cbb7458343e2e6

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