Malicious PDF — malware analysis report

Static analysis result for SHA-256 64327332a1b87253…

MALICIOUS

PDF

45.8 KB Created: 2020-09-17 12:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6206ade728e43f378b4fe54d53cf8e31 SHA-1: 3998afd87e3da629f9fae9d6addaffd97ececc74 SHA-256: 64327332a1b8725371d7685b48ea87d6bcbd9c13211aef4e1c3278d26c37c7e5
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several heuristics indicating it functions as a link farm, potentially for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure. Although no scripts were explicitly extracted, the nature of the embedded links and the ML classification suggest a malicious intent to direct users to harmful content.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=grade+north+carolina+formative+assessments In PDF document text
    • http://files.healingwithjeannette.com/uploads/1/3/0/7/130739810/kufax.pdfIn PDF document text
    • http://soxusa.ccaromatherapy.com/uploads/1/3/2/8/132814930/rurutawodijula_moridurava.pdfIn PDF document text
    • http://files.ittsmichigan.com/uploads/1/3/2/6/132695836/temeseduweni.pdfIn PDF document text
    • http://files.professorcommerce.com/uploads/1/3/1/6/131606046/xazuro-mafapexuji-sonavu-wusazuduxare.pdfIn PDF document text
    • http://files.annreillynaturalhealing.com/uploads/1/3/1/3/131381675/1a10b3722b.pdfIn PDF document text
    • http://buzodijo.innovativeeducation.org/uploads/1/3/1/3/131379685/lafifu-werupetopelibe.pdfIn PDF document text
    • http://files.totallysocialasd.com/uploads/1/3/1/4/131437806/2989958.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bddd2329-07bb-4354-8ffd-9e361f653643.filesusr.com/ugd/501a20_ffb132e0c7ae48e398752bca7c58f863.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/wezepumawonaxekuvituk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2813/files/powerpoint_2010_timeline_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9507/5237/files/41262286517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/gopoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/pokemon_fire_red_download.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_off000073a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 5352 bytes
SHA-256: c63bd9ba68a6d28250b4c3fe8175e925af0ab024ba3091689933c7500ceb46a8
font_01_sfnt_off000085be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 10724 bytes
SHA-256: 4807dec8d8cd74f98ca32337f875604d6df1da20eef76552b10499245ea4f8e7

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