Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ca099a94b4e1c64…

MALICIOUS

PDF

40.7 KB Created: 2020-08-04 02:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a67f7e2d52062164c70197b6595a74d7 SHA-1: b9658f8b948f296d63e32ecd833b48e58d1f48ad SHA-256: 1ca099a94b4e1c6476b2e1226ccfb90942e14ce54ade6ed3f81fc7db3455e6e2
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate-looking documents.

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.cc/pify?keyword=absolute+pressure+and+gauge+pressure+pdf In PDF document text
    • http://files.hellogoimage.com/uploads/1/3/1/6/131607269/05659fc.pdfIn PDF document text
    • http://files.gatewaycathedral.com/uploads/1/3/1/0/131069869/7382438.pdfIn PDF document text
    • http://files.southhighchoirs.com/uploads/1/3/0/8/130814101/laloseki.pdfIn PDF document text
    • http://files.thelawnation.com/uploads/1/3/2/7/132712093/57d6ddb6fd2b.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/1/0438/2323/5232/files/kigetevikoxamoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/kirarogurififekevakol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4838/7239/files/27545860166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/submit_article_designed_by_askgraphics._com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9301/5195/files/94684537810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/destiny_2_discord_overlay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/pamisowosowuletuzowinelup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/resmed_s9_clinician_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/zojuberupitipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/73126088387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/80420812369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/8741740231.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 4

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_off0000612a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612A 5336 bytes
SHA-256: 3b0d3515ca50193f316ee7b2517de15927859fb8cedbb6cf6629b4b9c4feb681
font_01_sfnt_off00007359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 10076 bytes
SHA-256: 00ab4ba550aa67f09786ca2bc629c80b897d5f2cb0e5dfdd52bfc8b83f6e36f7

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