Malicious PDF — malware analysis report

Static analysis result for SHA-256 7feaa9b1d4cd0fcc…

MALICIOUS

PDF

44.9 KB Created: 2020-08-21 22:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b87c8b1ebc651523b8693f2cacb5dd9d SHA-1: f8e46cde46daf861fd9c162dd3d8291d6cd35fd5 SHA-256: 7feaa9b1d4cd0fcc888f8fe4f369493b9a1f8245b88ed78fc65f96f4e1a9dcb6
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text suggesting a lure for a 'football game free for mobile'. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to increase visibility of the malicious content. The ML classifier 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=football+game++free+for+mobile In PDF document text
    • http://files.thunderboyasia.com/uploads/1/3/0/7/130775025/b8f03.pdfIn PDF document text
    • http://files.northerneventrentals.com/uploads/1/3/1/0/131069863/zurozufulimivif_bowalunu_sixorisame.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/1/0433/3905/5258/files/93105675789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/competitor_analysis_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/the_beatles_love_songs_album_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/xumosujazowido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2761/1295/files/vumadadatobopamew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/logiluvejuvemafemosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/carboplatin_us_prescribing_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/65498813530.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 2

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_off0000732e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 5004 bytes
SHA-256: 7e727a5f1ccb8d7027f3a22322001321d36b3f3b4df3507cdce6d4df7651f66d
font_01_sfnt_off0000842a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842A 10316 bytes
SHA-256: b6e6422586d84cafbe905c7e66ea74d95e8d40626bdfbffc316c7c69cc6618d5

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