Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dbb77da13f532fa…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 13:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3e819d7d4282b00222edf58b72d9879 SHA-1: 6a7a035153d7d9756c43292ad2138e539801e35d SHA-256: 9dbb77da13f532fafa4ae084093d0ec414a23ba42568c2a33dea0b196167c395
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as 'cds eligibility pdf'. This indicates a phishing or social engineering attempt to lure users to malicious content. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=cds+eligibility+pdf In PDF document text
    • http://files.highfivegolfclub.com/uploads/1/3/0/7/130775503/pajubu.pdfIn PDF document text
    • http://ligabemef.nod-production.de/uploads/1/3/2/6/132695540/sodelejajozulolet.pdfIn PDF document text
    • http://files.facepaintingkat.com/uploads/1/3/1/4/131437865/6581396.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/1/0433/0664/7717/files/all_rotom_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/steven_s_skiena_the_algorithm_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/43636206394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4962/2431/files/kuraxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/mathematics_content_methods_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/femaneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/tawonaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/biografia_de_pierre_bourdieu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/newspaper_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/lidenojukibuzib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8841/6663/files/multi_stage_theory_of_carcinogenesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/temotizutuxatumanozelew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/folofimebumol.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
🗂 Part of campaign: highfivegolfclub.com 4 samples

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_off00007040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7040 5048 bytes
SHA-256: 221384630d2ab89401ad75816c5ba20073004fb5c6af5069d1cf5c1caabb42c3
font_01_sfnt_off00008188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8188 10180 bytes
SHA-256: 24aae1cd99877fdd57fa6299dbb1562a270e1b66fa13c2b4536b6fee5779cff5

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