Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3acd8187b239c5a…

MALICIOUS

PDF

48.8 KB Created: 2020-08-08 15:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68f636d1b1beb7cb48003cca7031cc5e SHA-1: 0b695250962e3ac9b851ad559df0a99d9ca93bf9 SHA-256: f3acd8187b239c5a08cf14d9ed6255f4c8c06c5617122840871e355d7a0c12db
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting it is disguised as an 'Application letter example for job pdf'. The primary malicious URL identified is ttraff.com, which is used to redirect users. The file also contains a large number of links to shopify.com, which are identified as a link farm.

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=application+letter+example+for+job+pdf In PDF document text
    • http://files.awesomepawsacademy.com/uploads/1/3/1/4/131453109/gozosawigew.pdfIn PDF document text
    • http://files.cliqueticketproject.com/uploads/1/3/1/6/131606345/tukajewebaxotiz.pdfIn PDF document text
    • http://files.bannerville.com/uploads/1/3/1/6/131607522/kegixok.pdfIn PDF document text
    • http://files.fit4ballet.co.uk/uploads/1/3/2/6/132695701/5377396.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3870/1728/files/play_riversweeps_at_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0459/6122/files/does_discord_record_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/23160807695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/steven_skiena_algorithm_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/bixonubifewipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/limigozoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/autism_breakthrough_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/derurilogulipipilisuvele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4737/9356/files/kazobinosegon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/zelonajitotuwubonodudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/10389566168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/comptia_casp_study_guide_download.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 5184 bytes
SHA-256: 412b29341957b9c87957807d542491ebe97beeb87e44eb00772aaf0b04f609b4
font_01_sfnt_off00008659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8659 9956 bytes
SHA-256: 0d6968a048abbc80b72eccdb7045eafa0f40042b02dd6807a35a436ade8dea91
font_02_sfnt_off0000a848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA848 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3