Malicious PDF — malware analysis report

Static analysis result for SHA-256 932da18c75427b8e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 08:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6dd305d25bbdeaa005100edb8a5fd38 SHA-1: 0aefce488ec859c18bc8eb9cb2fb50bdc79d9e96 SHA-256: 932da18c75427b8e108fa91c692b0800faa71d174d2bb97cae27a54e7285fca8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that redirects to a malicious URL, disguised as a free book download. This is further supported by heuristics indicating a malicious redirector and a link farm designed for SEO manipulation. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but includes the malicious URL.

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.com/pify?keyword=computer+organization+and+assembly+language+book+pdf+free+download In PDF document text
    • http://files.michharry.org/uploads/1/3/1/3/131398279/fa7b4fa8c8374.pdfIn PDF document text
    • http://files.janetashley.net/uploads/1/3/0/8/130874510/vadulator-badidugamixevi-tejulesimad-xudek.pdfIn PDF document text
    • http://files.dimedragons.com/uploads/1/3/0/9/130969904/b41cbe7e.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/1/0433/0687/7080/files/34597476450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/cartagena_protocol_on_biosafety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/fazavin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/wazibenube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/85776352088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/rojorapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4899/8811/files/how_to_mod_skyrim_ps3_without_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/96488239829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/kezunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jamitaribigonekadori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/automata_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4565/files/everything_i_never_told_you.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/40055565502.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 3

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_off0000662a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662A 5712 bytes
SHA-256: 97693c20c974a07044c88109fb97701552712a84dad23de3d0b16bc801f5d360
font_01_sfnt_off0000799a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799A 10212 bytes
SHA-256: cac97851f21dae366da6cfa40e8ddb69b6dad2b29b0897987aa5f0d11d338768

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