Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8e540abf3f2ba8…

MALICIOUS

PDF

45.2 KB Created: 2020-08-14 11:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 691fdf7893bd02c4d9e169ff53f8dfb0 SHA-1: fa64945f05db93faf4231065a4584781832e35e0 SHA-256: fd8e540abf3f2ba8b032062b89241d6e3fb4d14bdccd8d7132b385c5c9386a4e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/wb?keyword=anti%20theft%20system%20for%20cars%20pdf, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to 'anti theft system for cars pdf' and the malicious URL, suggesting a lure to entice users to click the links. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wb?keyword=anti%20theft%20system%20for%20cars%20pdf In PDF document text
    • http://files.southportlandlacrosseboosters.com/uploads/1/3/0/7/130775462/xibof.pdfIn PDF document text
    • http://files.texaspaganstudents.org/uploads/1/3/1/4/131453384/mupatirof.pdfIn PDF document text
    • http://files.cleggenglish.com/uploads/1/3/1/8/131856358/8186382.pdfIn PDF document text
    • http://pozoz.realestateagentcadway.com/uploads/1/3/0/9/130969754/tifaj_nujusosi_bepusisoliwegex_jedebojofa.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/1/0432/9088/6312/files/49571893063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/xuvajusofubowemuwekoses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/21415412640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9447/files/titedilujevovutegonuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/kejifinosijewidujonaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/handwriting_exercises_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6462/1211/files/kingdom_hearts_1._5_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/lufejezavosov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/butomelopomem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/59485980543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/add_bookmark_nitro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/autocad_publish_to_transparency.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 3

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_off000072a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A2 5456 bytes
SHA-256: e357bab03a32ed5b2644339de343555a29fd40f1285d671d6fc42e14eba41bba
font_01_sfnt_off00008506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8506 10148 bytes
SHA-256: ec81aa3355061f27bc60b2ca0c93b563f486daf9742e97e8f0530d51e9c4dbc5

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