Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f0aecdccf95496…

MALICIOUS

PDF

32.7 KB Created: 2020-08-24 13:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfda55bf3deb22a1837c4fd90928b55f SHA-1: 3512f166d55c67c038844c1259dbbc38ae19f0d8 SHA-256: a3f0aecdccf954962aefb71af789a0f76448b341714ed59d99515ebc2456a865
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a Breitling watch manual. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=breitling+1884+chronometre+navitimer+manual
    • http://metopiwi.archaeoacousticsscotland.org/uploads/1/3/1/3/131398564/vegeluku.pdf
    • http://files.annepatrickbooks.com/uploads/1/3/1/3/131398157/fa86a81a215857.pdf
    • http://nuxujaloz.gracefulvoice.com/uploads/1/3/1/0/131069839/2481569.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/sebafoxususonazula.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/42166659642.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/26954508997.pdf
    • https://cdn.shopify.com/s/files/1/0447/0479/2729/files/english_grammar_rules_and_usage.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/jajidunogigeresida.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/xetuxibugoziwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/free_avast_uninstall.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/vibufena.pdf
    • https://cdn.shopify.com/s/files/1/0438/3077/1869/files/absolute_app_inventor_2.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004370.bin
f25257dbf5433ea4fcf591bfe8621c7350e4bd7bbe193d37c49d961b91a69425
pdf-font-stream PDF embedded font (sfnt) at offset 0x4370 5476 bytes
font_01_sfnt_off000055f9.bin
976809013f47d71978b6ee4c97adbbb56a068c638a19fc3bfd26144197572a89
pdf-font-stream PDF embedded font (sfnt) at offset 0x55F9 9436 bytes