Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c8893031d5f67f…

MALICIOUS

PDF

80.3 KB Created: 2021-03-07 09:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0f35d01b458df67159c5290d2fc351d8 SHA-1: da88488909c4e2264553af11197ff8fd86138e3c SHA-256: d7c8893031d5f67f0007cd46c93290dff266c39d720a4916fc7a09e82cb183a5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'golowaki.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, appears to reference a product review, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=avent+electric+steam+steriliser+electric+4+in+1+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411932/normal_5ff79b83a4a8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459482/normal_601f470511fde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420019/normal_5ffec236392b3.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/dalarunafebifakomim.pdfIn PDF document text
    • http://zujadise.scienceontheweb.net/how_to_change_language_on_sandisk_clip_sport_mp3_player.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5fdaedaf138a4.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/poputapoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5ff1149f952fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_60263fa2f0042.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502817/normal_5ff67a8c17b72.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/wawanug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453344/normal_60047a301b523.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://vumamuv.myartsonline.com/90587683203.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/bizhub_c258_spec_sheet.pdfIn PDF document text
    • http://gavuzolu.epizy.com/free_simple_cash_flow_statement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/84821880616.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_461c591a682c4703991d39e8e0e54ed9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/firefox_51._0.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/2400524551.pdfIn PDF document text
    • http://veboxin.epizy.com/diono_radian_rxt_car_seat_review.pdfIn PDF document text
    • https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_f6b799e59c244cf3a9ca2c8f082f6fbc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/kakifaxutonigiz.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_off0000ec33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC33 4904 bytes
SHA-256: 39a145b34df978156d8e6a66b7eaf7585c043a6a75433cd29f23d915abeb47a3
font_01_sfnt_off0000fcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD7 11336 bytes
SHA-256: 50e1db459f309c05e1b7382b3e19bcf0f3b436dd1cc67a2e45573d1d26cf8fda
font_02_sfnt_off0001236a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1236A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.