Malicious PDF — malware analysis report

Static analysis result for SHA-256 517b9380d6b43189…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 11:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee6caad5d0038d96106fee8117c58e68 SHA-1: 8b86a0691c09e26d730c52f485cb9b7cc9cbe7d7 SHA-256: 517b9380d6b43189b25b44ead89d53eb988b96478f0f66934642c74bb8f3d161
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is a known malicious infrastructure. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The document body also contains a callback phishing lure, indicating a potential social engineering tactic to trick users into calling a fraudulent support number.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=cra+representative+authorized+form+business In PDF document text
    • http://gojoto.sporkbooks.com/uploads/1/3/2/6/132681862/fatoriw-zasorokiw.pdfIn PDF document text
    • http://xawepur.shandsschool.org/uploads/1/3/0/7/130776819/6fec18fe19ca.pdfIn PDF document text
    • http://vedopu.bernardfraga.com/uploads/1/3/2/6/132681579/kuvusulibitisiw_salurerowox_kupubasevi_noditi.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/1/0437/7578/7162/files/80496266864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3651/7028/files/camscanner_for_pc_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/puzodoludexavalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/working_capital_analysis_excel_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/stretching_bob_anderson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6041/files/desozefifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/4109309590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/demopolis_alabama_arrest_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/gifizidajir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/96053468706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/ovulation_calendar_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/gezebiwawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/tableau_priodique.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6808 5404 bytes
SHA-256: 5f0f9881d3dd51ae79eba7f458c3fde8e1be633e97c9beac0df5a3afd14a2aeb
font_01_sfnt_off00007a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A43 10164 bytes
SHA-256: eac5dac5c098f02d478706097caf783ee7b8b78fdbd689c677d24ce23591f55b