Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0adf4ada59878f…

MALICIOUS

PDF

73.4 KB Created: 2020-11-16 16:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3313f6294a67e22b11bd3e8fb183f336 SHA-1: 2b0efcfb056f7444f388e9d0a3e4b02ff7b376a6 SHA-256: 9d0adf4ada59878f0cd679b78effec1c0e45535f44eae5fda44021f2ada45743
244 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
  • 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/123?utm_term=encore+cheer+competition+2020 In PDF document text
    • https://weroxodadugofu.weebly.com/uploads/1/3/4/5/134503620/4514163.pdfIn PDF document text
    • https://lunokebu.weebly.com/uploads/1/3/4/6/134648327/9166801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377403/normal_5fa1993d29b50.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/gakifuvakiveten_takojeros_gutafilusobifa_bokuvutepaxe.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/9b924f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453335/normal_5fad22cf4b87b.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/wuxefugujat.pdfIn PDF document text
    • https://misaxokur.weebly.com/uploads/1/3/4/3/134354007/widelalux-sudawupilu-texezivapewe-falerinuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f93d91288075.pdfIn PDF document text
    • https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/vazaxodirarejinupo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35d9c3d-2260-40c2-8186-56bc8493bd1f/6478243714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df79a4f4-43e9-4418-b70c-f55c14a3c37b/93047831844.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/logorotiwatujunozuvanez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71fe753b-353f-4df7-a8ba-53b044a7d727/kugogululizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c16a599-c325-410d-af0e-9074a9bc8943/lusolubefixurim.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB70 4984 bytes
SHA-256: 6afe04aed44cc084e3281ca80949d806aa8a1c852c413370f18149addfded68d
font_01_sfnt_off0000dc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3F 11604 bytes
SHA-256: f6701c0288255d80fd11b23b89b4dcc9c4d51a474a5bf302dbbd8c0aadfd84e3
font_02_sfnt_off00010336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10336 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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