Malicious PDF — malware analysis report

Static analysis result for SHA-256 7697128d5d568e6b…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 02:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7985a2b1bd54016ea877fef677e9fc89 SHA-1: 11ce2c2c21e389918936d386603a4ae285a909a0 SHA-256: 7697128d5d568e6b87c2b6d1c15c6811a4cfd7851e98458ba77b4a08957e3de8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL. This indicates a phishing or scam attempt, likely using a link farm to distribute malicious content. The ML classifier also 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.ru/pify?keyword=anatomy+physiology+of+skin+pdf In PDF document text
    • http://files.profabcorona.com/uploads/1/3/2/7/132712358/bojejodanukugozuxi.pdfIn PDF document text
    • http://files.britishbelgianbantamclub.org/uploads/1/3/1/8/131857419/4590701.pdfIn PDF document text
    • http://notozaz.dianesestatesales.com/uploads/1/3/1/3/131380213/4c95cac6a6c0.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/1/0431/1695/3751/files/58817964061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8960/8360/files/23976877966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/46503468900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1626/files/the_south_african_constitution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/nepuwumubafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/3028984105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/bodybuilding_workout_plan_for_mass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/pokeriti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7487/0689/files/biblia_paralela_ingles_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/fanisudugivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/mewowexixedabevukito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/82052805616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/9442422921.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 1

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_off00006c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C37 5512 bytes
SHA-256: 65eeb26596ed748f2e81558ceab869401df98c51db19c18cf0b9679cf41050f8
font_01_sfnt_off00007ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE0 10996 bytes
SHA-256: d2262e4d7f62a1b592555541975fc69093572b1b9cbaeb9b2ae0deb0cbd5cca3

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