Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe6b666d2866a78…

MALICIOUS

PDF

86.6 KB Created: 2021-02-26 08:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d0d07b6141161cc1e2410ec1d26c3b09 SHA-1: 70c3a2be9dc868440ef97c6b6e92eb9191174564 SHA-256: bfe6b666d2866a784da05ee0d2c3e5eccd59f4855c511f3e281d925aff60f76c
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://jottigo.ru/aws?utm_term=how+to+put+together+a+shop+vac+6+gallon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454822/normal_60135d020117d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479462/normal_5ff216ae07ed7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416672/normal_600476c3b0d3e.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/republic_of_doyle_season_6_episode_10_cast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_6007d60f44428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_603021df0f903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417669/normal_6014e34278dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_60385b48b9021.pdfIn PDF document text
    • https://gasibikame.weebly.com/uploads/1/3/2/8/132814219/rosodutajilepep.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/introductory_to_multivariable_calculus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463809/normal_60258d2f40bbe.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/whirlpool_gold_fridge_filter_reset.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vebusatoro.atwebpages.com/how_many_sweet_potatoes_make_2_1_2_pounds.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/troy_bilt_walk_behind_string_trimmer_parts.pdfIn PDF document text
    • http://litorow.myartsonline.com/simple_russian_grammar.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_off00011518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11518 5460 bytes
SHA-256: d4cf835cc126fc686a46f3a199bdf431828170b5097394787a84c359bd5dad14
font_01_sfnt_off000127c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C2 11168 bytes
SHA-256: 311df9e60bd0bef9c3ee7044b4347ffa08c3acdf94147b41ca250a9b000f8f31