Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b6fd2b0c5b0f57…

MALICIOUS

PDF

50.1 KB Created: 2020-08-17 10:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1de215ddc208ca3f76584be17d36e160 SHA-1: 2ecc1a38fed1a2211494adbbd65642efe43bd210 SHA-256: c6b6fd2b0c5b0f57a1af70c2262ffe29e436e403b347da49093c1a675b57f6da
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though partially corrupted, includes text related to a 'ccsp official study guide' and the malicious URL, suggesting a lure. The presence of numerous other links, many pointing to Shopify domains with numeric filenames, indicates a link farm designed to obscure the malicious destination. 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=ccsp+official+study+guide In PDF document text
    • http://mopoke.cambridgenyupc.org/uploads/1/3/2/6/132681026/8bb914.pdfIn PDF document text
    • http://files.laptcycling.com/uploads/1/3/0/7/130775373/radazotetevuwib-tapovilabazob-parivujev.pdfIn PDF document text
    • http://movorawo.kabani.eu/uploads/1/3/0/7/130776445/didafomep_kudutataruli_famabot_tagafuze.pdfIn PDF document text
    • http://xufuz.modumartialarts.com/uploads/1/3/2/8/132814050/878f5.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/1/0427/4854/3142/files/59950584555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/tunuvunotodolejusefagavak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9268/7528/files/free_orchestral_vst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/redis_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/25875475815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/35406954936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19836568605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/myers_briggs_personality_test_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2359/5677/files/83361045626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/29177147783.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 2

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_off00008410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8410 5236 bytes
SHA-256: 0da2ce0ecf22a6e41ec59120cf1b90c56c45e542630df67790e88721c570ddb9
font_01_sfnt_off000095f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F5 11148 bytes
SHA-256: 1aad36940a44d480ea6bf8ad1bfa952638118a8f62f285f085515de294be997d

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