Malicious PDF — malware analysis report

Static analysis result for SHA-256 628585a1116492ad…

MALICIOUS

PDF

52.9 KB Created: 2020-08-25 00:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 277a1ba633a5c5b43c20ee706a2ab02f SHA-1: c02978c8ba0b5a1b18e2e74c104f68db31f0bfad SHA-256: 628585a1116492ad1d2152442b93fd1a1bc043e8269970ef064911d82433df52
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=vox+bass+headphone+amp+manual, which is flagged as malicious. The document's structure and content suggest it is part of a link farm or phishing campaign designed to drive traffic to malicious sites.

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=vox+bass+headphone+amp+manual In PDF document text
    • http://files.mounthorebccl.info/uploads/1/3/0/7/130775308/5059560.pdfIn PDF document text
    • http://files.youngtrillsoul.us/uploads/1/3/0/7/130775557/6421183.pdfIn PDF document text
    • http://files.leemariephoto.com/uploads/1/3/0/7/130775743/katuleza.pdfIn PDF document text
    • http://xuvopifa.thehockeyprofessor.org/uploads/1/3/0/8/130874426/lijulamuzo_dakow.pdfIn PDF document text
    • http://files.index-s.com/uploads/1/3/1/6/131606677/2821887.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/1/0436/5231/7342/files/adele_someone_like_you_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/calibration_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/joxunilavobuzarokuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/17438600240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/6162704319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6863/4789/files/kaplan_anatomy_colouring_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/mcafee_light_securitydeutschersiliconangle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/lebigugemezin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4060/4314/files/japeterunasubara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/xawuvewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/haigler_creek_fishing_report.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_off000090a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A5 5276 bytes
SHA-256: e19c7470022766a7d00002370b7d335626a168c654a6362d6134a32dc21f3540
font_01_sfnt_off0000a26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26A 10604 bytes
SHA-256: f0aaf91fe091991b89b754d30949eae568ad5501cdb75c888b121c79b6d0a68f

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