Malicious PDF — malware analysis report

Static analysis result for SHA-256 b868a6fc0dfe0107…

MALICIOUS

PDF

38.3 KB Created: 2020-08-20 22:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db1a6eac209f8ca9dfb2a8c46224b87c SHA-1: 7178c34a8e2f7380142b60efffa6938ea1a0aa1f SHA-256: b868a6fc0dfe0107f1813fc9a26cb109d11ba94bbc3a06a0de3d52e23e8e1a0a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, including a redirector to traff.ru, and numerous links to PDF files hosted on Shopify. This suggests the primary purpose is to create a link farm for SEO manipulation. The ML classifier also strongly indicated maliciousness.

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=tattoo+flash+sheets+brisbane In PDF document text
    • http://files.greendogfarmcsa.com/uploads/1/3/0/7/130775639/rakiwow_voxegavevexevux_jabobeluzefigu.pdfIn PDF document text
    • http://files.tameraboundsforcitycouncil.com/uploads/1/3/1/0/131070508/80ef5e57.pdfIn PDF document text
    • http://files.adamramey.com/uploads/1/3/1/3/131383580/aa22bc91afe63.pdfIn PDF document text
    • http://rigumokis.gearedforgrowth.co.uk/uploads/1/3/2/6/132682204/devogukonajux_rupanufife_xerodabet.pdfIn PDF document text
    • http://files.hi5taxis.com/uploads/1/3/1/0/131070011/1574136.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/1/0435/7786/8443/files/devovusipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/11745732983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/17467366891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/adobe_after_effects_keyboard_shortcuts_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1852/5599/files/masked_singer_monster_performance_episode_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0337/1935/files/toyota_avensis_verso_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/tudolok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/bully_english_1-_5_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/jibutanojopoxejiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/pediatric_airway_anatomy.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_off000058e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E6 4944 bytes
SHA-256: becb8c3d35dedf24779a260a528491b842bc8a4412e9c4cc1b942b5b12a96c91
font_01_sfnt_off000069aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AA 10128 bytes
SHA-256: fa232b1c85707f7e34bb35d76b182d3f8ebf6d522d38f29c99b935fd6b011a6f

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