Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbf4d6a6c1937d9…

MALICIOUS

PDF

44.9 KB Created: 2020-08-02 19:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15225c21e6b95e43b7a3d20fa3e5257c SHA-1: fc8cb0f71059987dfc06c2fa482ade0481ba603d SHA-256: 0cbf4d6a6c1937d9385be39f19c90a734418ad5abf8707b5c01ca823542cdc71
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=the+divide+2011, suggesting a lure for users to download content. The presence of a large number of external PDF links and the ML classifier's high confidence score further support its malicious nature.

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.cc/pify?keyword=the+divide+2011 In PDF document text
    • http://files.akillerstory.com/uploads/1/3/1/3/131397987/2924895.pdfIn PDF document text
    • http://files.maeflowerfarms.com/uploads/1/3/0/7/130738801/lekegezekujew_sufakerijijok.pdfIn PDF document text
    • http://files.karenflanneryphotography.com/uploads/1/3/1/4/131482819/vinikokijuwekiwos.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/1/0431/7826/2689/files/bikofuzokexakubadepokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/81142238072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/jofasofus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/vejowuxavidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/vefiwaxoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/93920289449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/paxobisepinokome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/21253770276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9249/2963/files/dudejabowemidozosoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/83614290984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/ropaluxenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/fuzalaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/vowesu.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 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_off00007129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7129 4732 bytes
SHA-256: bd546fa189a36a46225cb226fa36c65c380aa9bf13d3b6452fa396f0d6d648e5
font_01_sfnt_off0000814f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814F 11124 bytes
SHA-256: 15106426edc1569059eb2cf04b651027c1e40e8c3be70a3d86d0ac606e8b5dca

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