Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cad86c6fabec62…

MALICIOUS

PDF

58.6 KB Created: 2020-11-18 09:39:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6e2d9aaa1d690c842cd1dda9de5085dd SHA-1: 16b257e7dad456bec696f1855683f56dbc3bc36b SHA-256: 62cad86c6fabec62aac543df541c4ee70359e0eeeb228b9473a4c3de568196fa
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 0.9996

Heuristics 5

  • 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.
  • 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=bee+movie+dvd+amazon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367680/normal_5f87e29b55762.pdfIn PDF document text
    • https://zonebudufekepok.weebly.com/uploads/1/3/4/3/134382159/03b42fd756da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5f8fd962e7a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5f8d3c4605c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_5fa30417e8f7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419629/normal_5fa493877f04e.pdfIn PDF document text
    • https://pejirudofatepo.weebly.com/uploads/1/3/4/6/134648176/2261054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5f8b62850bb81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_5fa5e610071c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406782/normal_5f9f0b6fe150e.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/lolijexejomak/is_nanh2_a_strong_base.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/kyani_sunrise_benefits.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/dapuravofudog.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/undoing_depression_richard_oconnor.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/roxafetofoze.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/breaking_benjamin_greatest_hits.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_off0000ab18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB18 4824 bytes
SHA-256: 92fe819650c8ec0b3078d7d91f40b166d84e36d0d095b077e7a9ba1bfba33570
font_01_sfnt_off0000bb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB7C 9792 bytes
SHA-256: f86f6bb2970f549a5a8b19c9155d6d49b6dd0135a77b60961d55375735f8d5cc

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