Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f098cdca4f18c2…

MALICIOUS

PDF

70.1 KB Created: 2020-12-15 15:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 47196a97fb667d437234262224462a25 SHA-1: 7bac4ed93810567d6988f09cdbef6714bc270da0 SHA-256: e5f098cdca4f18c2ea8cade9a7ab633e24bf65e706780372255b12c3612feb9d
294 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

This PDF file is flagged as malicious by multiple heuristics, including a critical rating for impersonating Gmail for credential phishing and a high rating for luring users into remote support scenarios. It contains a link to a known malicious redirector, https://cctraff.ru/123?utm_term=chrome+os+iso+download+vmware, which is likely used to deliver a second-stage payload. The document also instructs the user to interact with clipboard commands, further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/290f74.pdf.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://cctraff.ru/123?utm_term=chrome+os+iso+download+vmware In PDF document text
    • https://cdn-cms.f-static.net/uploads/4488092/normal_5faa4b38b03bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389582/normal_5f9c2a91adead.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/290f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485578/normal_5fbf2bd7a6d79.pdfIn PDF document text
    • https://rupugafes.weebly.com/uploads/1/3/4/8/134847604/forelugenoxi-poxaxulupunevi-zejiwonexebuwi.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/sefukirexuwekij/wavufitovewefobek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39f9df1-3fee-4ee2-8582-dee4449bb122/nolijekixefixarida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba1a3570-576a-42d4-9fcc-e0658881d7e0/the_cave_walkthrough_twins.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fd222b7-1f1f-4d21-81a0-08157bbed66f/zalavilod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/574d8a34-d87b-46e3-85a5-0aed25837da9/pokemon_phoenix_rising_1.2_download.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/54382002286.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/feweroder.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/40024822918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5dd54aa-abc9-4cc2-bbe1-61d2217dde1e/gukeriwoja.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/31090655128.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_off0000d3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D2 5124 bytes
SHA-256: 288cc1cbe26cd33f9e76590ea3af0113911150d58990cd56c9af541bbcab373c
font_01_sfnt_off0000e51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51E 10924 bytes
SHA-256: 0b524bf399fa8a332475605862c4281c61553ec3d8dca929639d546c8f81ca10

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