Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a266c732419ebb…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 19:35:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ba5b36d9cf0a90e0f127031a7fceff8 SHA-1: 0eb66a23f79562c49c0ef3c232b86e57187b9c04 SHA-256: 17a266c732419ebbd2252a20e1fb85700cc9dcb150ad02dadd490b297b401339
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract users under the guise of free downloads. This indicates a phishing or malware distribution attempt, likely initiated via spearphishing.

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=accessories+vocabulary+pdf In PDF document text
    • http://files.thelearningcornerpreschool.com/uploads/1/3/2/6/132681796/tobewupuv.pdfIn PDF document text
    • http://files.lbf1997.org/uploads/1/3/2/6/132682113/xufotedoxafuk.pdfIn PDF document text
    • http://files.designby-faith.com/uploads/1/3/0/8/130814058/xaxikekexoxakeda.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/1/0428/4776/4636/files/resident_evil_5_infinite_ammo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/15382262478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/generate_random_string_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/15870699981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/25478378613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7487/1711/files/jixozozogosaroziburig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/47175904174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/kurixofomomubixafenoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/75814413687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/58694525398.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 5

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_off000070ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FF 5440 bytes
SHA-256: 1f56093a309c584ba8dcb7389c5db1f46e17c40f703aec124e21c7d29293b9b0
font_01_sfnt_off0000839b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839B 10760 bytes
SHA-256: b47acb9c7b812c74261ad11aa5af9e2e5bfcc8962f479ef998fc94f2a37daf58

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