Malicious PDF — malware analysis report

Static analysis result for SHA-256 881a7af29151aefc…

MALICIOUS

PDF

38.5 KB Created: 2020-09-11 11:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b10b73146b109225312def030ad6ce1 SHA-1: 3a526e5b5f2a502dafc563a0c91d765384c78b41 SHA-256: 881a7af29151aefca02393cf72bb6651fa72a7b3969279f461b0da33b14b2ffb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to redirector infrastructure designed to obscure the final malicious destination. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, likely for SEO manipulation or to host further malicious content. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.link/wix?keyword=bathilda+bagshot+a+history+of+magic+pdf In PDF document text
    • http://files.crowsnestpassmusicfestival.com/uploads/1/3/2/7/132740399/bifuzefubunu-nepoto-rokiwoje-riwuguf.pdfIn PDF document text
    • http://files.probatehomesgetsold.com/uploads/1/3/0/8/130814597/3208bad3f96.pdfIn PDF document text
    • http://sokonanog.vstsandmore.com/uploads/1/3/1/0/131069839/wetexupebexege_bodijetusiloje_lotoxaw.pdfIn PDF document text
    • http://kukisa.thehorsebakery.com/uploads/1/3/0/7/130740596/ralewizapugozi.pdfIn PDF document text
    • http://selenoz.performanceprogramscompany.com/uploads/1/3/2/6/132683188/gewaxepagul-jajegikilo.pdfIn PDF document text
    • http://laker.hawaiianbar.org/uploads/1/3/1/6/131606490/7160859.pdfIn PDF document text
    • http://kobub.jenniphelanphotography.com/uploads/1/3/1/3/131381886/vebemopidusop-jitomilo-milokejatadiw-bewogituji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/0ebc1f_2fa5c75ddf38482a9dfd47e0a292fe00.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3f4b99_326d431859844e5b9f321d77671b0248.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5926b4_303bd09a4d9842ef8be5ca4be54a5602.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/10cedf_1a13186d96db466e816161bfc756a29f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/895bef_2e62add786554c80a20f602fcd761851.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6116da_8093651ab41f41b7aba1b740f87cbfc7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/717a42_9437bde609dd4da2bb7ca978c15dcb05.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_bfb6a894fa1941b5b53319ad9cec7686.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/90c678_1cb6a66989984a309fc3bb7963891d1b.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 5

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_off00005615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5615 5860 bytes
SHA-256: 481cbefafe77f7727bec7adeda8def88e4a65fed82d211744a7bf2238a60ca47
font_01_sfnt_off000069e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E7 10256 bytes
SHA-256: c42459a182fd6c475d1e72db242f0d25b9649529f064ed0a8be93996268a8303

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