Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8dfa00ca39639bf…

MALICIOUS

PDF

39.3 KB Created: 2020-08-24 06:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f84782a6ac1e1c5892fec44461dea32 SHA-1: d5f79e2afdd52896aa6e84dc11007dad6622f64c SHA-256: c8dfa00ca39639bf8e4d4a485039e119d36c25526bd4673171b0ccc41f42d800
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to an 'evacuation drill report format' and the malicious URL itself. This suggests a phishing attempt where the user is tricked into clicking the link, leading to malicious infrastructure.

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.com/pify?keyword=evacuation+drill+report+format In PDF document text
    • http://files.campspirit.ca/uploads/1/3/1/4/131407233/mubopib_vonudisevesukov_goden_wopojowoxosakaw.pdfIn PDF document text
    • http://files.indianacoal.com/uploads/1/3/1/3/131384462/4682341.pdfIn PDF document text
    • http://files.enactusguelph.ca/uploads/1/3/0/7/130738978/2593813.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/1/0441/1519/8104/files/nipewatubibuzak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/accra_technical_university_courses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2782/3778/files/85830319295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/19681857353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/71592169883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/75887073345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54954124591.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 6

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_off00005dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBF 5140 bytes
SHA-256: 98fa4f303364098e6bab6cf7a68e4ba23421f1f22851ade9e221f620ba9c35f7
font_01_sfnt_off00006f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 9780 bytes
SHA-256: 23d6c18c0a22a4bd442483b822f2b6892bb273745015908a127aba13475fdb8f

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