Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b058c3b74288c2…

MALICIOUS

PDF

31.3 KB Created: 2020-07-07 12:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 5efb71f5a172481d65b0a7cc5c976e15 SHA-1: b086e60024f4c04a0ff3a918ac81027892af1249 SHA-256: 95b058c3b74288c232e77f33497fca8b521b4e493c646021bfabb0905cf040f9
184 Risk Score

Malware Insights

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

The PDF document contains a lure related to a Ferrari 360 Modena owner's manual, but its primary function is to host a large number of embedded links. One critical heuristic indicates these links point to known malicious redirector infrastructure, specifically `https://ttraff.cc/wb?keyword=ferrari%20360%20modena%20owners%20manual%20pdf#ferrari+360+modena+owners+manual+pdf`. Another heuristic identified it as a PDF link farm, with 26 external PDF links, suggesting a potential SEO poisoning or traffic-driving scheme. The document body also contains numerous URLs pointing to external PDF files, reinforcing the link farm observation.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=ferrari%20360%20modena%20owners%20manual%20pdf#ferrari+360+modena+owners+manual+pdf In PDF document text
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdfIn PDF document text
    • http://files.thatdogplaceltd.com/uploads/1/3/1/3/131398357/budodibobu.pdfIn PDF document text
    • http://files.gammaetaomegaaka.org/uploads/1/3/1/6/131636990/5608641.pdfIn PDF document text
    • http://files.skyleblanc.com/uploads/1/3/1/6/131637034/sabosutukitikusuwiw.pdfIn PDF document text
    • http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdfIn PDF document text
    • http://files.thesanctuaryatmn.com/uploads/1/3/1/8/131856184/d83262d07.pdfIn PDF document text
    • http://files.creeksideband.com/uploads/1/3/1/3/131384789/3301404.pdfIn PDF document text
    • http://files.unidadepastoral.com/uploads/1/3/1/4/131437351/195585ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jipowifo.files.wordpress.com/2020/06/73692913760.pdfIn PDF document text
    • https://badiwilam.files.wordpress.com/2020/06/72695388365.pdfIn PDF document text
    • https://zezofirot.files.wordpress.com/2020/07/fomuwimidar.pdfIn PDF document text
    • https://purupale.files.wordpress.com/2020/06/jixelopusorekeko.pdfIn PDF document text
    • https://nalibavur.files.wordpress.com/2020/06/soxavu.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_off00004193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4193 5496 bytes
SHA-256: ff050ba31e0183bf39a69f3b5d64a65ba70bdd072c1fd7b4b90c82340ac5c268
font_01_sfnt_off0000542f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542F 8532 bytes
SHA-256: 5c31ee9c0cb33fad39f7f820d2bb1a849d67e79a248587237f71e15f57243f73