Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d78b1824e1153e…

MALICIOUS

PDF

74.5 KB Created: 2021-02-24 18:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 61f0b90128383c79bacd3a1691371213 SHA-1: 58813b236a8a1368687fc2ef6dba0888a55f0cb7 SHA-256: c2d78b1824e1153eb061dfb983aa7272243d1613220c6720de1814912ca6a0f5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://baarspo.ru/award?keyword=heat+mate+kerosene+heater+wick PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391623/normal_601f087f213c9.pdfIn PDF document text
    • http://boviriso.22web.org/asme_section_viii_division_3.pdfIn PDF document text
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/b3ba52cd.pdfIn PDF document text
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/sijut-zezavefiw.pdfIn PDF document text
    • http://titanovyi-filtr.ru/xizugabosubovarcbn5.pdfIn PDF document text
    • https://teriwogawuf.weebly.com/uploads/1/3/2/8/132815342/4124718ada4d.pdfIn PDF document text
    • https://fikosaxan.weebly.com/uploads/1/3/4/7/134753192/sazurepudar.pdfIn PDF document text
    • https://dibalinelig.weebly.com/uploads/1/3/1/3/131380687/nifipu.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/zozidosas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/u_dictionary_app_apk.pdfIn PDF document text
    • http://wobuwikag.epizy.com/echocardiogram_report_abbreviations.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/zefakoligaretagovamamaxe.pdfIn PDF document text
    • http://natexekazedap.epizy.com/art_and_craft_ideas_for_teachers.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/tagapulut.pdfIn PDF document text
    • http://livirava.atwebpages.com/just_do_your_best_poem.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_off0000e777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE777 5124 bytes
SHA-256: ac376c3e3083b762f643ab0a4dbac0fac1a79d3efa7462cdea72effebd08b93e
font_01_sfnt_off0000f8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CD 10676 bytes
SHA-256: a4d45ab72f624e3986ed8e85cc18c9009611e7415fd0399ffc40ea12e2642d23