Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f403505932c103…

MALICIOUS

PDF

38.7 KB Created: 2020-09-09 22:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fbeaa247d239885aa3acc929651bdfe SHA-1: 9cf4bf98ab99687d0f22ba1ab463308bdd7646ba SHA-256: b6f403505932c10348ff2a0e7973710f7db2949e811d5a04be1499ed99cfb59a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though partially corrupted, contains text related to 'Hearts of Iron 4' and the malicious URL, suggesting a lure. The primary intent appears to be redirecting users to malicious infrastructure via the embedded links.

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.club/pify?keyword=hearts+of+iron+4+wiki+beginners+guide In PDF document text
    • http://files.alanawynn.com/uploads/1/3/1/4/131438282/warogebijajebil.pdfIn PDF document text
    • http://files.westernheartsracing.com/uploads/1/3/1/4/131438324/xijifojutogo_lobimemikexiki_vevagupeparar.pdfIn PDF document text
    • http://files.watersaltbohojewellery.com/uploads/1/3/0/7/130739007/564980b3e.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/1/0438/6209/8085/files/46631707850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/33599490688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/58447504417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/2573/3285/files/19733064611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/how_to_iterate_through_a_map_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/constancia_de_estudios_ug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/fl_studio_12_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9836/5340/files/cambridge_latin_unit_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/neoliberalismo_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/40212797552.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/834936_e6e2ad1b66c7452e858173cdcc5e71fb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/61b8bf_f305fa688e9c417d8b3f3a37a3e64912.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ad2ade_0ced21f72a8f4af9be952cd44eec9ff2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7f16bd_9e48242d58b24e75be2dc55eb0489f46.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_off00005820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5820 5388 bytes
SHA-256: 643b7e60682c0c2a93fc2aeacf354fe9f9f79b548e7c14f3d6619220690f1000
font_01_sfnt_off00006a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A98 10280 bytes
SHA-256: c6c923b983bc92564e9cde75e0f72b8191d6697c26a76416d4f52ba52ad91adc

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