Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d766ff65500d14…

MALICIOUS

PDF

73.3 KB Created: 2020-11-26 00:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 49ed7c47ef128d3833b7a47843f52696 SHA-1: d68883b313bcbb70f21614f13bc232427c149520 SHA-256: d8d766ff65500d1445785676122e5344704834dd66f519911111fe56eba3afb1
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://traffine.ru/strik?utm_term=sonic+adventure+2+chao+raising+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5f93eff19b078.pdfIn PDF document text
    • https://faxegosesu.weebly.com/uploads/1/3/4/5/134528451/8185077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413244/normal_5f97bb5f4590e.pdfIn PDF document text
    • https://dolojimopa.weebly.com/uploads/1/3/4/8/134887070/suziruzunefaverupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5fa9b8452a3ec.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/6d9cc9223272.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/2697538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476593/normal_5fb3f21b125d4.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/getizar/bungen_active_passive_englisch.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/game_for_peace_beta_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/words_that_begin_with_oft.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/36290261604.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/97341213690.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD401 5348 bytes
SHA-256: a48db8ad2be10d1a6bc31f105dd4552fe9d1d2ce7e7a88c558bf97c90b5f0c98
font_01_sfnt_off0000e619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE619 10556 bytes
SHA-256: 4d90ec40b34d8016051f722cad0b26ca91c338baed6298aa8e1ba3e38cdeaea7
font_02_sfnt_off000109f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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