Malicious PDF — malware analysis report

Static analysis result for SHA-256 75dd370b1333eb04…

MALICIOUS

PDF

64.8 KB Created: 2020-10-09 15:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 01fa33833387dbafdd713b54d259f9fa SHA-1: ba03317da69e5017781134b110e22c8956163bed SHA-256: 75dd370b1333eb043774550e1c08ac7e76dfbadd3c76ce411ef3f88944f2d72b
184 Risk Score

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://gettraff.ru/strik?keyword=heinrich+himmler+quotes In PDF document text
    • http://files.truehopehealthyliving.com/uploads/1/3/0/7/130776739/roluzukukutos.pdfIn PDF document text
    • http://files.aandrclean.com/uploads/1/3/0/8/130874246/goridulez-gugotetip-gonufudegot-kozeg.pdfIn PDF document text
    • http://files.primariusstaffing.com/uploads/1/3/1/1/131164124/lixodixeku-dojenusidiz.pdfIn PDF document text
    • http://files.alorenzdesign.com/uploads/1/3/0/8/130814342/9790196.pdfIn PDF document text
    • http://files.kreativtouch.com/uploads/1/3/0/7/130776649/0d856a5ae78.pdfIn PDF document text
    • http://vilite.leanwithluke.co.uk/uploads/1/3/0/8/130874575/6249439.pdfIn PDF document text
    • http://webed.moodyplumbinginc.com/uploads/1/3/1/4/131438044/3458667.pdfIn PDF document text
    • http://files.roadswell.com/uploads/1/3/1/3/131398292/ponalemega-dofowabojaworo-garanebil.pdfIn PDF document text
    • http://files.kaseandjase.com/uploads/1/3/1/1/131164199/4612667.pdfIn PDF document text
    • http://bigope.teapup.com/uploads/1/3/1/4/131453853/4455436.pdfIn PDF document text
    • http://files.kellyskylefiles.com/uploads/1/3/1/4/131453146/xebuw.pdfIn PDF document text
    • http://zokelele.cornerstone-civil.com/uploads/1/3/1/4/131453134/83585.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC187 4916 bytes
SHA-256: 76fe1ed0bc6a631cf6506e238c02a4c823b0e23f53ddd497330657a1691df771
font_01_sfnt_off0000d216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD216 11028 bytes
SHA-256: dcb6753f73a1e882dbd08780bffe8c6d7f626f3641a4145c90fb131f66fc6489