Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa790f56d14f2bf…

MALICIOUS

PDF

52.7 KB Created: 2020-08-21 11:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f5caa70538f9d775c97a50676066997 SHA-1: d0b9a335654824ad7a1f17df7c592f7889878d04 SHA-256: 0fa790f56d14f2bfcb2b88c8ae8688d78f50a2e743ee3a33b3dc405b97dea632
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.cc', which is flagged as malicious. The document body and heuristics indicate a lure for free downloads, a common tactic for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to 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.cc/pify?keyword=binks+sake+brook In PDF document text
    • http://files.namiwashcounty.org/uploads/1/3/1/1/131164310/1c743995a0d6bd7.pdfIn PDF document text
    • http://files.hsiaoaiwang.com/uploads/1/3/2/6/132682615/7248143.pdfIn PDF document text
    • http://files.pickleball-germany.net/uploads/1/3/0/7/130775634/boxopamokufafame.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/1/0438/5538/0630/files/57856925774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7001/9998/files/linux_screen_command.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/56329429182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/tizadinakisekuxafisipodak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1865/files/libro_los_cazadores_de_microbios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/56062088829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/benim_hocam_tyt_tarih_video_ders_notlar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/94064070281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1949/6606/files/splatoon_2_lobby.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 15740 bytes
SHA-256: 71e19904f78ec8175dbd4f594d250a4763db438f994122da1a6cac5fcf5281ea
font_01_sfnt_off0000929e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929E 4900 bytes
SHA-256: 72eadeaa145a305c2566d857760f29f1441b7c25a6e8177aa750bfb9fd7c1b5b
font_02_sfnt_off0000a34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA34E 10156 bytes
SHA-256: 013291c7d262aa2ff623857c67f7f072105ecbebb1e477cef8e5425f059fc387

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