Malicious PDF — malware analysis report

Static analysis result for SHA-256 8196e0bda03daf18…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 07:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b8885e7fba4214875795e838d0b731e SHA-1: 9d4a73085674e13cd3625f79475c9f0b7c6270f2 SHA-256: 8196e0bda03daf186da8b5e614f859a04e18a50073848ccc12f25e77f6448364
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=expenditure+report+2017'. The document body, though partially corrupted, suggests a lure related to an 'expenditure report'. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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=expenditure+report+2017 In PDF document text
    • http://files.todorental.com/uploads/1/3/0/9/130969332/degus.pdfIn PDF document text
    • http://files.cottonwoodcreekclothing.com/uploads/1/3/2/3/132302735/73a724bb95fc.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/1/0437/2201/4885/files/tamil_news_paper_download_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/37747235847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7994/8695/files/grade_7_maths_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/alto_sax_christmas_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/81366566120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0157/6615/files/2775621277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0487/files/74501941372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/96055023268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/37465691427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/sajifonedaletapeke.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 1

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_off00006378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6378 4964 bytes
SHA-256: a26764bc7ef9c28fa47f8183499b87973a5691576781da06897271863bc30d33
font_01_sfnt_off00007480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 9980 bytes
SHA-256: 090aeb0248090768018816a4d4d794d40f5bcab4f4209f23b6429f8863224002

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