Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5fbb4ee613b87da…

MALICIOUS

PDF

41.8 KB Created: 2020-08-17 15:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 399f76b67d2ff8980c7c93f601a339f4 SHA-1: ac5706c10e8825f4fefcb1e7309879154c35ab81 SHA-256: b5fbb4ee613b87da6ceba4aed9047d429fff8226fb14f91912ab6bdffec00e34
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, masquerading as a crossword puzzle answer key, to redirect users to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=norse+gods+crossword+puzzle+answers as a malicious redirector. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many pointing to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector is the malicious redirection via embedded links.

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=norse+gods+crossword+puzzle+answers In PDF document text
    • http://files.cfandtg.com/uploads/1/3/1/0/131070116/0b8d355f3a79.pdfIn PDF document text
    • http://files.completedentistrystudio.com/uploads/1/3/0/7/130739525/pikepefovoge.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/1/0430/4021/1097/files/31177679734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3338/5381/files/fujugupiwejidixapokuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/funilotizar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/ziziwabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/vasagipil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/manual_de_programacion_arduino_uno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5809/2439/files/15898889985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/actual_test_vol_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/basafupudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0283/0745/files/avalon_hill_bismarck_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/porodevegipediwilozukuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/commando_2_miniclip.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 8

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_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 5352 bytes
SHA-256: a3ec3fb826971198c1e647112bfa4491b3ec0675ee10e0f6fccfbbdffd830d27
font_01_sfnt_off00007996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 9592 bytes
SHA-256: e0858d8dd61ab4420243ba28176c967050beeda206e46bac066af9c5ca367771

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