Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bf099bf90aa01e…

MALICIOUS

PDF

90.9 KB Created: 2020-12-15 15:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 46e2d6bd63074fc852662a374f4ab152 SHA-1: d4c09388259e70d52187d7b4914f0705531750ff SHA-256: 62bf099bf90aa01e5c08d1af83c684ddbc7333e5976a7575f5c452b061bd9f64
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are numeric or follow a pattern suggestive of SEO manipulation for malicious purposes. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafffi.ru/123?utm_term=a+silent+voice+parents+guide PDF link annotation
    • https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/vejoxarapi.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/3f295ca1.pdfIn PDF document text
    • https://rinuvigilositu.weebly.com/uploads/1/3/4/4/134463450/bodigifatalifejoro.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/b3ba2ff.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/sowevisoro_fosogedapuboze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a205d2-ff03-4067-b85c-d68c4ad0faa0/54265731127.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e5064be903ae642a8ca/1606225489830/mufesodilelofov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc39115e5c7695ca9ac5e61/t/5fce1e7fd235d37878eddd36/1607343744358/16741790394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf7b322a-58fb-48c0-a481-200022a7c77a/catapult_or_trebuchet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f45d04a2-f317-4fa8-bf4a-e409b024cf43/67976042650.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_off00012750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12750 5288 bytes
SHA-256: 0ca9ff444eea4e7a92ab14d4a5572284de284f53bd0d71a428d8d95d1945538c
font_01_sfnt_off00013962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13962 10988 bytes
SHA-256: ed6bfaeb52573890493f77c83819d724efaa5af5e0e9dd343f1e9ae85872a64d

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