Malicious PDF — malware analysis report

Static analysis result for SHA-256 469c46c31f2c841a…

MALICIOUS

PDF

41.9 KB Created: 2020-09-16 20:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98f3dbbbc435270bcb2ee727f9df5442 SHA-1: f5ebdd3b1583602c71480bbd1494523ff95cd4d8 SHA-256: 469c46c31f2c841af84ee259a2f0d5761b818385ea79c576ae8fe112aeacbe56
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded links, such as https://ttraff.link/wix?keyword=difference+of+cubes+worksheet and http://fowivig.sheephillherbs.com/uploads/1/3/1/3/131380999/749906.pdf, are likely used to lure users to malicious sites. No scripts were extracted, and the document body was heavily obfuscated.

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=difference+of+cubes+worksheet In PDF document text
    • http://fowivig.sheephillherbs.com/uploads/1/3/1/3/131380999/749906.pdfIn PDF document text
    • http://files.faeriean.com/uploads/1/3/1/8/131871583/668721.pdfIn PDF document text
    • http://files.nadeemkhan.net/uploads/1/3/2/6/132695714/nazurira.pdfIn PDF document text
    • http://files.selectstartpress.com/uploads/1/3/1/3/131383837/biwowo.pdfIn PDF document text
    • http://libomabo.hannahrose-blogging.com/uploads/1/3/0/8/130874254/3585950.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0f5995ec-7d30-4793-8091-461e1e387be9.filesusr.com/ugd/c268f7_6483e94b02854440abe446731a3d83df.pdf?index=trueIn PDF document text
    • https://a63952de-fd62-4939-91be-c9b1bca85864.filesusr.com/ugd/4bb894_274b9e019e3041b98fb97971f5fd8814.pdf?index=trueIn PDF document text
    • https://a34502d6-8063-4cfb-9b0f-2919676fef6c.filesusr.com/ugd/d93890_7c71391f8074453fa9c30f3df91ca139.pdf?index=trueIn PDF document text
    • https://78d9ee74-dde0-47f5-b89c-bb93eece8b86.filesusr.com/ugd/81d6a4_6dd2eb675c95467a85cdb26e2c7b87bf.pdf?index=trueIn PDF document text
    • https://93931606-5e73-44dd-9e16-ec45b86501ec.filesusr.com/ugd/d1c05f_d44fdb39cc8c436d91ae2fca7e3d86d5.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/62062418954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/59143653662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/soliwoditabixemokeleverak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4383/1198/files/lapopetuvuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/90th_anniversary_andis_master.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_off000065ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 5024 bytes
SHA-256: ad9d6c153e05394cab41b8e486345585b1cc2393aa9a64dd86bbee2d1d48489c
font_01_sfnt_off00007722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7722 10472 bytes
SHA-256: 846caef31fed9febe8426074c724de88a777e16ad4881d08ba48914481baf225

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