Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d0a89ff023725d…

MALICIOUS

PDF

46.1 KB Created: 2020-08-26 19:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bf9eb010c1ef59ca2cc319ab2689b66 SHA-1: 96e71e3fecb7ef0b658f7745d73a8e5ec30dca8b SHA-256: 28d0a89ff023725d29a6e5371ffd9126d12ff237d02e2c17bbb6ce71c69b51fa
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with numerous external PDF links, many hosted on Shopify. This suggests a campaign focused on distributing content or manipulating search results. The ML classifier strongly supports the malicious nature of this PDF.

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=pedro+picapiedra+xxx In PDF document text
    • http://tavuz.danielealancarter.com/uploads/1/3/1/4/131483254/5111813.pdfIn PDF document text
    • http://jixezal.jennybermas.com/uploads/1/3/1/3/131379578/394d76.pdfIn PDF document text
    • http://lukogij.chestertonantiquemall.com/uploads/1/3/1/0/131070374/tisudalivudaz-burukiv.pdfIn PDF document text
    • http://foropagi.ecoinclusive.org/uploads/1/3/2/7/132740720/6859924.pdfIn PDF document text
    • http://files.gergelyszucs.com/uploads/1/3/0/7/130774979/327570.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/1/0432/8253/0472/files/4425416730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/42504681702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9128/0277/files/wawisofaxalegiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8428/files/2009_cadillac_escalade_performance_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/deruritejolafurevisuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3810/8830/files/performance_appraisal_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8116/1121/files/bihar_tet_question_paper_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1710/7618/files/ragomowexasumejegozudug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/abramelin_ritual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/filixizaxiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/wexafola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/bifiritipimubewumifake.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_off000068d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 4928 bytes
SHA-256: e3e2266fbc5e697454b225e2847d0862fd750f9529e995e4720027089d069190
font_01_sfnt_off000079a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A9 15948 bytes
SHA-256: 11b9e939b84bb81b4b4b88524bf253c6e77c835e3fe8e34ac65886a4c4109391

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