Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa686f9325773ac…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 22:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 427d616655ca2dd8539b0dd8f7fef6ce SHA-1: 7f12ccd56a9935d1e9f360ed376ab56759c06bd0 SHA-256: 4fa686f9325773ac7f6a8a62865c2b830fe803e2e8bc412b6a3def0603327246
194 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, embedding numerous external links. The primary heuristic indicates that one of these links, 'https://ttraff.ru/pify?keyword=michael+t+heath', leads to a known malicious redirector. The document body contains garbled text but also includes the same redirector URL and several Shopify-hosted PDF links, suggesting an attempt to disguise or distribute malicious content through a large number of URLs. The overall pattern suggests a phishing or redirection attack designed to lead users to harmful 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=michael+t+heath In PDF document text
    • http://files.ryanpfouts.com/uploads/1/3/0/7/130738696/kiwanizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/19953562333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/27037388128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/kiwisovopexifivuvogidagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5996/files/nilunijazipavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1167/8114/files/suzukagejukobaxirutixasiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/algebra_linear_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5363/8044/files/anatomie_et_physiologie_de_l_oeil_humain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/eclipse_free_for_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0722/0644/files/fodadaxodutulines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/interview_questions_and_answers_for_supervisor_job.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
🗂 Part of campaign: nbhsffa.com 3 samples

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000542c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542C 4192 bytes
SHA-256: 99235f6e742c1856211478388efa3a9c2e5cecda82a11cde1af46e908db9667e
font_01_sfnt_off0000625e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 10608 bytes
SHA-256: b1b25ef9c7be386d8e218782ec2499a6d6a9c6a68e5b12c6c49e8f9a307b7b10
font_02_sfnt_off0000867c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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