Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f84b3fae7d39977…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 06:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c27fe803d2d967c628f50930f792023 SHA-1: 61af3006e22df1c2210eb0cd7338a77645fd2f90 SHA-256: 3f84b3fae7d39977a0cd490965d76cc690466844d34e651e69335d1030c8f439
194 Risk Score

Malware Insights

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

The PDF contains a lure related to a US passport application form, combined with heuristics indicating it's a malicious redirector and a link farm. The primary URL, 'https://ttraff.ru/pify?keyword=us+passport+application+form+ds-+82', is identified as a malicious redirector. The document also hosts a large number of external PDF links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further malicious content.

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=us+passport+application+form+ds-+82 In PDF document text
    • http://vivovodi.theowlfrompowell.com/uploads/1/3/2/3/132302870/af89eb96fdaf.pdfIn PDF document text
    • http://files.carolinastormhedgehogs.com/uploads/1/3/1/6/131637291/fanipewonosewagafuv.pdfIn PDF document text
    • http://tavifenoj.holisticapproachfdc.com/uploads/1/3/0/7/130738667/daf51a91d.pdfIn PDF document text
    • http://files.in2improv.org/uploads/1/3/0/9/130969910/kojuwodela.pdfIn PDF document text
    • http://lofotar.aishasuniquecosmetics.com/uploads/1/3/0/7/130776436/zovenad.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/1/0430/9309/8660/files/defawigopixiwenodudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/filmfare_awards_2020_winners_list_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/76082681888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/basic_english_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/chess_2_player_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/marlin_guide_gun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/59409003222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/gumekatakujef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/pifilabatidupel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0970/3061/files/arquitectura_de_computadoras_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/kroniki_anunnaki_chomikuj.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_off000067f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F8 5652 bytes
SHA-256: c124fb0eaf32ef399a5bb48b9b150175901ad10a35c3e4aa3ed2169be4f6d26d
font_01_sfnt_off00007b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B19 10316 bytes
SHA-256: 74d5a0e0989d05b6ce2daf499e8b9aec09b8708cb3ada1a33d860d2efd710ca1

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