Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a3605c4b0c0a8a…

MALICIOUS

PDF

69.3 KB Created: 2021-02-20 18:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 739d52ff9ba5596ff4f1943486419e0f SHA-1: 42ba1899708079c13953710cd95ae809b71532f2 SHA-256: 37a3605c4b0c0a8a0e7360cec504f60032186d2fef33bde57c94ba9239b05bd8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=survival+chaos+wc3+reforged PDF link annotation
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/nawaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469349/normal_6009d9dc283c1.pdfIn PDF document text
    • https://jibajupo.weebly.com/uploads/1/3/1/6/131636806/busofilek-zoxujigo-losejotej.pdfIn PDF document text
    • https://bokesavuxi.weebly.com/uploads/1/3/0/9/130968985/2658775.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/binary_code_lettersuwlk7.pdfIn PDF document text
    • https://firulasimasib.weebly.com/uploads/1/3/0/9/130969438/tajow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_60229f3d48760.pdfIn PDF document text
    • http://flylovel.com/xam_idea_accountancy_class_12_solutionsfw6z1.pdfIn PDF document text
    • https://didunomupipopad.weebly.com/uploads/1/3/1/4/131438203/5310493.pdfIn PDF document text
    • http://gidepel.22web.org/nipipozumef.pdfIn PDF document text
    • http://krokoboko6.xyz/dadamevezirasalovoduwi252pn.pdfIn PDF document text
    • http://kokilubowo.22web.org/59499270063.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387427/normal_5fde8814b12d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367305/normal_5ff8b1c3bddee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369487/normal_5feebfdbd2a49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386349/normal_5fcfa2d4caf3b.pdfIn PDF document text
    • https://garepogive.weebly.com/uploads/1/3/4/8/134871831/117018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wejanofe.rf.gd/autocad_lt_command_line_missing.pdfIn PDF document text
    • http://tevedelowudori.epizy.com/beige_dress_semi_formal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC455 5396 bytes
SHA-256: 4bc2853fe32fe68f3bb06c1f585a9261a13478d7f6ca94fc48f7974fd633cacc
font_01_sfnt_off0000d6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C1 10336 bytes
SHA-256: c662ca4f601b2ae7cd750b6fac6031dfd3d173293d45e252009beb9a57c59a57
font_02_sfnt_off0000fa38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA38 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34