Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e08b2c780ff345…

MALICIOUS

PDF

84.9 KB Created: 2020-11-24 21:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 256464ff70670b80d51e09b38cfd140f SHA-1: 96f8935e79e467f2ba015755394cbb6f9f370142 SHA-256: 30e08b2c780ff3452c7ca44e311d2c31993194fe7deaa23b607bb1df22d6bfe2
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 0.9997

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://trafffe.ru/123?utm_term=mi+propio+auto+summary PDF link annotation
    • https://gojupisot.weebly.com/uploads/1/3/4/0/134016698/05102486451f30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407314/normal_5fb6e8d87e659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8705a820526.pdfIn PDF document text
    • https://xigijoxupawise.weebly.com/uploads/1/3/3/9/133999412/f7f49855967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f97a47e78ef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5f96f2dcd881e.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://s3.amazonaws.com/damerirazib/27452349093.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/3313689949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd43ee1-f9f3-417b-b98e-be97f54b6fb9/70936635581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817b2a33-dc22-4f8f-a8bd-bb8c8e8a7f0c/pixerejorafuxumogen.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/lemoxakonavebu.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/40769975377.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/chernobyl_free_season_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7D 4696 bytes
SHA-256: 3952e8a12d8fa5021c213109ded5264c6f8f6e95a1aa15c2d313e6a40fd105d9
font_01_sfnt_off00010e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E72 13156 bytes
SHA-256: d03e8d99e77e79c5d97c90517bb72dbadb39783ef3993e2f903c4cadff94f109
font_02_sfnt_off00013889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13889 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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