Malicious PDF — malware analysis report

Static analysis result for SHA-256 89cb27853d381d8d…

MALICIOUS

PDF

44.7 KB Created: 2020-07-31 02:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f3309d13a54564afe29296deea905bd SHA-1: 0c3f8ed12f499277ea1bcffde9da78c7ed79fed1 SHA-256: 89cb27853d381d8d763b6e325d7284fcd305d0c06eef409aef68dc88dc52155c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, appears to be a lure related to 'facial muscles anatomy pdf'. The primary malicious activity observed is the redirection to a malicious URL, suggesting an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/pify?keyword=facial+muscles+anatomy+pdf In PDF document text
    • http://files.moremilestogo.com/uploads/1/3/1/0/131071063/kurotovovisonevaneb.pdfIn PDF document text
    • http://files.economiczhang.com/uploads/1/3/0/9/130969045/sudutifijukego.pdfIn PDF document text
    • http://files.karlyperez.com/uploads/1/3/0/8/130814714/puvesu-dilakinenisam-maxajake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/jobasosakunoviwekis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/27442599784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3349/2641/files/98170182543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/bezuxosisekogedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/doxetunazopeguxulizun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/60065510057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/9359333208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/16219475651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/xoxinepojutipuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.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 6

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_off00007274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7274 5144 bytes
SHA-256: d57f1366bea39bc6d731c696a5bc59551bbac2c77fd8b47fec60a9e8f6fda7b3
font_01_sfnt_off000083ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 10312 bytes
SHA-256: 0793741e1bc5eae9ff06930c6cd68786b30d1cfca8128f4bb2e2521dd92e168e

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