Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57e2ad52257bf6b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-02 18:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e0fa81bf6cdf8c3a31724774551ab8f SHA-1: 361d0418ffe020d714456493f05b73e78d9b8723 SHA-256: c57e2ad52257bf6b778032f67f7d21f5857ed39d6f2f83e03285152af727ef9d
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body contains garbled text but also includes the malicious URL and several Shopify-hosted PDF links, some of which are confirmed benign while others are unknown.

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=runs+per+game+mlb In PDF document text
    • http://files.delmarvagoldens.com/uploads/1/3/0/8/130874612/b839dcbe.pdfIn PDF document text
    • http://files.dempseyandwindle.com/uploads/1/3/0/7/130775970/5303147.pdfIn PDF document text
    • http://files.bensiddallmusic.co.uk/uploads/1/3/2/6/132681812/3069293.pdfIn PDF document text
    • http://files.danaavant.com/uploads/1/3/0/7/130775746/3375008.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/1/0431/3497/6157/files/xemezugufekinar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/rawulosor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/11970269022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/98837119666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/49889923428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/jadolixipafakafisigiremag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/zotesibovazidijujuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/59521244255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8049/files/brew_install_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/system_dynamics_palm_3rd_edition_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/lamuvajerominij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/dapamonopitotamojafoxuran.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_off00006915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6915 5288 bytes
SHA-256: 57dc65ebdbd6929276d6fa3ab76a8029e15ac8d333f69704aa57b4a699ccbf66
font_01_sfnt_off00007afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFD 10000 bytes
SHA-256: 1f51e2eaffb14938500319daa1e97239b351dd87dbc8ca697b0d3af5bec655e0

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