Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc73e8667d4b17e…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 23:51:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 591b2949544d8bc42f69d9879dc2e8d4 SHA-1: 01c211df766c7fdfd2e68b3db8abe0dfc9fa1b1a SHA-256: fbc73e8667d4b17eb0080a1d29cc671d3c508a1a08a3ca40d3465a8fba16752e
194 Risk Score

Malware Insights

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

The PDF contains a lure related to legal forms and advance-fee scams, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It also features a high number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or traffic redirection. The primary malicious URL identified is https://ttraff.ru/pify?keyword=second+trust+deed+form+california, which is flagged as a malicious redirector. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=second+trust+deed+form+california In PDF document text
    • http://files.ronwozny.com/uploads/1/3/1/4/131454098/3953701.pdfIn PDF document text
    • http://wikibife.firefightercycle.com/uploads/1/3/0/8/130874493/2568061.pdfIn PDF document text
    • http://saxewat.ocacolorrun.com/uploads/1/3/2/8/132814439/wivajopumu-dabikafelimore-bukufuzikami-goloxeno.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/1/0438/4296/1570/files/exploratory_data_analysis_with_sas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/19721677023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/air_pollution_control_a_design_approach_fourth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/jewakoxogomirejudum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/kotunejizinegowoxaxemutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7670/files/xudaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/dibakew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/75405884983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/lower_back_pain_physical_therapy_exercises.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_off00005f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F92 5152 bytes
SHA-256: 1176f3c931076ed0ff3f766a87eef348f6feb00945ba4c52448b8d66be0dc98f
font_01_sfnt_off000070e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 9724 bytes
SHA-256: 18d4d30746e34b8818d2fc0631654a0df3a28f1afa402869d4e83658318af766
font_02_sfnt_off00009236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9236 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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