Malicious PDF — malware analysis report

Static analysis result for SHA-256 65935cdc7c4127e2…

MALICIOUS

PDF

53.5 KB Created: 2020-08-05 23:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c3bca38ef74db730646637ebad05a81 SHA-1: 44408c9f8b81246fee89a1069226678daae12198 SHA-256: 65935cdc7c4127e22ccfe86d4ce5aaf2e08c7ad2aec01c793e02ba24a162d977
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=bisection+method+in+c+pdf', which is flagged as a malicious redirector. The presence of many links to Shopify-hosted PDFs indicates an attempt to disguise malicious activity within a large collection of seemingly benign 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.com/pify?keyword=bisection+method+in+c+pdf In PDF document text
    • http://files.lymanproductions.com/uploads/1/3/1/0/131070597/8103172.pdfIn PDF document text
    • http://files.nikkileahdesigns.com/uploads/1/3/0/8/130874110/gunaleti_fesigovuros_dipap_zutix.pdfIn PDF document text
    • http://files.nctfconcealment.com/uploads/1/3/1/8/131856308/tariwiwezel.pdfIn PDF document text
    • http://files.goodbyechristianwhore.com/uploads/1/3/1/3/131380889/netapuv.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/1/0432/0142/9662/files/85876178129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5962/4606/files/chromatography_multiple_choice_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9998/5822/files/finatiramenurewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/jig_boring_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/lonely_island_jack_sparrow_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/kagetubitefumefijezovaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0005/3408/files/55196601539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/94603953095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/30547975418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/37449257966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/buguguxovovugosaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/palapevogosirepizel.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000762e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762E 5104 bytes
SHA-256: 576dd8b5dbb64fff537d980faa1f6753d137747ca0b31bbaeb5ee3af99c40270
font_01_sfnt_off0000876e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 13552 bytes
SHA-256: 91adf6cae8738371196fe92178b07cc72c2e1986277b1236aac845987455f786
font_02_sfnt_off0000b385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB385 16148 bytes
SHA-256: 9def142226f437a2ba4283d976d890154c0e2dbb92bc97532184205699c6e9c0