Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44f75e3e9117557…

MALICIOUS

PDF

69.5 KB Created: 2020-11-10 11:32:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed59006b30043a41d895e46710183b64 SHA-1: 7b441841279043d00c64a2bbadcc417ced522fe3 SHA-256: a44f75e3e9117557a5ef8ff76f194879ac8bf467ced3ed41b1421044f73c50db
156 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, 'https://trafffi.ru/aws?keyword=brighton+high+school+brighton+tn+football', is flagged as suspicious and likely leads to a phishing or malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates the PDF is designed to host a large number of external links, suggesting a link farm or SEO poisoning tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=brighton+high+school+brighton+tn+football
    • https://gidaxejopof.weebly.com/uploads/1/3/4/3/134305554/1828082.pdf
    • https://kulirudezu.weebly.com/uploads/1/3/4/5/134583820/a52f8dc14a7c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/29b4dfb1-8055-451c-86f2-3cf9f83af589/nawekakoxumisuvuv.pdf
    • https://uploads.strikinglycdn.com/files/32d3cda3-251f-4523-90b4-1d4ebd8730c5/nenewovemasupekefin.pdf
    • https://uploads.strikinglycdn.com/files/7eccaee0-2f41-4441-a42f-eb0c89967162/ranewivirututiruraxugij.pdf
    • https://uploads.strikinglycdn.com/files/7df647d3-bb17-47b6-835e-a9d32bb4c105/bissell_little_green_machine_turbo_brush_instructions.pdf
    • https://uploads.strikinglycdn.com/files/dcf64c45-e780-4806-b9ed-9b8bc795e92a/pokemon_go_memes_dirty.pdf
    • https://uploads.strikinglycdn.com/files/127d1996-48ec-451f-b330-8578a943f909/55890020996.pdf
    • https://uploads.strikinglycdn.com/files/6a3ab02c-1ef2-481a-a695-e10b18cd5834/12573850179.pdf
    • https://uploads.strikinglycdn.com/files/359de3ec-8037-48a1-a8d5-b0f2d8b9e6ac/91668168213.pdf
    • https://uploads.strikinglycdn.com/files/e63496cd-796c-4bd0-9560-48091143222e/20956570598.pdf
    • https://uploads.strikinglycdn.com/files/0d3d399a-1b80-4dc0-8855-6e70c4eb224b/harry_potter_printables_book_covers.pdf
    • https://uploads.strikinglycdn.com/files/16e740e7-0188-4ae2-a47e-c1f3aa613db9/34150162227.pdf
    • https://uploads.strikinglycdn.com/files/f840fe9e-85ec-4f30-bfad-884131b21eb5/54166840581.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d302.bin
92eb3e3e81726176e6cf3e576d1d2dd1ceb7ccd2c4958a1bf2d8fdd65693c7a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD302 5332 bytes
font_01_sfnt_off0000e528.bin
bbbef2bf92daf96c0952d22ffb07f5f37ecf846a0f994dbea572b3f132c8d613		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE528 10552 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.