Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbae22aae2c417a…

MALICIOUS

PDF

77.3 KB Created: 2021-01-27 19:28:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ff9a9da5e00c0a43c9fbf997ce89c97a SHA-1: 6d5bfa878fd16a42b113b989f12cdfbb71807205 SHA-256: 1fbae22aae2c417a42415b91d421e2c6e3fa43ee9d0c9057b739e5a0ecd1278a
184 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
  • 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 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://crophysi.ru/123?utm_term=the+course+of+empire+bernard+devoto In PDF document text
    • http://true-board1.club/daily_sale_inc_pompano_beach_fl6opwp.pdfIn PDF document text
    • https://doxazefeseremef.weebly.com/uploads/1/3/4/7/134764644/8917738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_5fea12ce1f914.pdfIn PDF document text
    • https://nejajabowiwuxo.weebly.com/uploads/1/3/0/7/130775705/7147465.pdfIn PDF document text
    • http://cooldomen.space/9831981980a9x6i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_600d03ca1bb04.pdfIn PDF document text
    • https://kagodititaf.weebly.com/uploads/1/3/4/8/134868324/7d7c7b35.pdfIn PDF document text
    • http://bonboxstudio.com/harbor_skyrim_togetherkwhe8.pdfIn PDF document text
    • http://copyright-supporthelp.com/hobby_lobby_furniture_legs46t4t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477655/normal_60028f96d067b.pdfIn PDF document text
    • http://mesretly.xyz/freeze_dryer_machinees999.pdfIn PDF document text
    • https://cdn.sqhk.co/ritafase/iicgfih/24392278610.pdfIn PDF document text
    • http://istlan.space/metixanufifelavufaz5g.pdfIn PDF document text
    • https://wibakaxidame.weebly.com/uploads/1/3/2/7/132741334/7efc1c1abf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5fe27cf803625.pdfIn PDF document text
    • http://xekuluw.iblogger.org/xuzimekikufakaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tedijafubivot.epizy.com/tamil_dubbed_animal_movies_isaimini.pdfIn PDF document text
    • http://nulanajivokavos.rf.gd/chronicles_of_nick_book_5.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_off0000f150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF150 5512 bytes
SHA-256: 68944a2a957714b01b0e91ec2af4b82b82c2c55d0d1c1f6ec1fc21ab7186159d
font_01_sfnt_off000103e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 10600 bytes
SHA-256: a28faffc39f007a7b77093671dfe63bb89a07df56c3bff4a3bcdabb4ee97b792

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