Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9c9e52bbbff252…

MALICIOUS

PDF

36.0 KB Created: 2020-08-09 05:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee089b61b32255f69335d47fad2cf69c SHA-1: 2a07de8b64eb67c6c7759ab275f90c09b532842f SHA-256: 6e9c9e52bbbff25234891fd709c68dd53c525b75374feb24911862e22ed44d42
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick the user into downloading further content. The ML classifier also strongly indicated maliciousness.

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=cgegis+table+april+2020+to+june+2020+pdf In PDF document text
    • http://files.ellertonwesleyanchurch.com/uploads/1/3/1/3/131380995/9102525.pdfIn PDF document text
    • http://files.casa-office.co.uk/uploads/1/3/1/3/131383478/fifabolov-polebeleletudo-dusavapa.pdfIn PDF document text
    • http://files.maryqueenofireland.com/uploads/1/3/0/7/130775707/5641118.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/1/0436/6345/8457/files/kujura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kipisoluni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8701/0728/files/jg_ballard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/49978384804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5978/7414/files/michael_connelly_the_burning_room.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/dugojoxonafadosakexefirav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2866/6785/files/acute_myeloid_leukemia_review_article.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/wobojonisiwukorojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/64681788015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/31872166470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/61687014771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3961/files/pigogajamikolotuxagote.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_off00004e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E69 5604 bytes
SHA-256: 35163c41f1616273716ffaba937988cacb55c0acbdafbcf0c6ffee156c91ccb4
font_01_sfnt_off00006183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6183 9844 bytes
SHA-256: fb75b1977ec52e9955ac6bbf73d85d9903e13bae1aaeabddb84fb4edb2097cba