Malicious PDF — malware analysis report

Static analysis result for SHA-256 8439b6e2fb9af46c…

MALICIOUS

PDF

48.3 KB Created: 2020-08-04 12:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12bc0d972ec29fb8be71b2a0fd441cbb SHA-1: e25610d6ee11ebc4580073bc6aea51506ef303a4 SHA-256: 8439b6e2fb9af46c0d156c87a337ed1fb4486f836eae28742a875cde93274615
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'ifrs 16 leases kpmg pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. The presence of these links and the ML classifier's high confidence score indicate a phishing or malicious redirection attempt.

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/pify?keyword=ifrs+16+leases+kpmg+pdf In PDF document text
    • http://files.hickmanhighschooltheatre.com/uploads/1/3/1/4/131453005/786616.pdfIn PDF document text
    • http://sivuve.nationalscholarfoundation.org/uploads/1/3/1/4/131408738/nojumufogijiri-womijoritepidid.pdfIn PDF document text
    • http://files.allcityelectricalie.com/uploads/1/3/2/8/132815206/9a9ae31419.pdfIn PDF document text
    • http://files.sisterfriendlyproductions.com/uploads/1/3/2/6/132681281/fa680.pdfIn PDF document text
    • http://files.markseaton72.com/uploads/1/3/1/8/131871799/ecae8667cde.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/1/0431/3192/8740/files/bizumikut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/dynamics_of_machinery_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/66740139873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2827/4587/files/jamelugezazubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/wubezuruludexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1188956193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/pekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/gawelununitosim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/63599121552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/65334239240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4464/9630/files/80363202293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/97301953812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8102/4159/files/sixuzotizesimozubevoganov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 5012 bytes
SHA-256: 4b2cd8ff18381b640ff43af29355616dc8649d04c27b030838d21de0da4d4021
font_01_sfnt_off00008476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8476 9748 bytes
SHA-256: 9b9a4368e87882bf14f7c42f206f6720fa6b76027ce805d828548060c90dc578
font_02_sfnt_off0000a5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230