Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f15af2afdea7628…

MALICIOUS

PDF

87.2 KB Created: 2021-04-23 05:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 687beceddb445d76ee0a69d2ff123533 SHA-1: 7fcc177000b07895f448bb38d1ed2a214e1f482c SHA-256: 0f15af2afdea7628a0f11993ba696166efb426f4685408aaf390a96f46580937
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which point to PDF files hosted on services like Weebly, suggesting a link farm or SEO poisoning tactic. The embedded URL 'https://ponafet.ru/strik?utm_term=how+to+repair+tv+with+no+picture' indicates a lure related to technical support or repair services to direct users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ponafet.ru/strik?utm_term=how+to+repair+tv+with+no+picture PDF link annotation
    • https://xapefawisago.weebly.com/uploads/1/3/4/7/134771693/1694097.pdfIn PDF document text
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/zuzidaxe.pdfIn PDF document text
    • https://zadobixif.weebly.com/uploads/1/3/1/4/131437920/tigenade-tarofoxidubofaw-bubika-vukatu.pdfIn PDF document text
    • http://kalavar.xyz/bahubali_1_malayalam_songs_videoweyau.pdfIn PDF document text
    • https://sagerogokijisoj.weebly.com/uploads/1/3/4/6/134601402/xatikuxitu-dazajanaviviza-zowifigaw-vabotarebokel.pdfIn PDF document text
    • http://groshyk.site/puribizaderuwejud6oy8j.pdfIn PDF document text
    • https://tefajarusi.weebly.com/uploads/1/3/0/7/130775660/mibirolub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_ba55b79afe3a423fbbb038b0fe0b5305.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/mueller_report_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/rigogaguwusibipurupuzufag.pdfIn PDF document text
    • https://e148473a-3d1a-46f8-b788-fbc1f5af68d4.filesusr.com/ugd/e1e70b_cff7f6724000447ea17c245d9dcb3d05.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tamovagag/47750434071.pdfIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_4d7ff9ac7e5040258805fcbfec731818.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e147813-c926-40b3-84cc-1de00f2d3663/33150037795.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/20617914487.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/90570074042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d507e0ef-adce-4492-a4ce-11a7fad0a199/john_deere_lawn_mower_maintenance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/what_makes_a_vehicle_commercial_in_california.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/flash_man_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/bokitagukegifaxotulufole.pdfIn PDF document text
    • https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_180e98bde60c447cb99f5b0062f3c3d9.pdf?index=trueIn 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_off000119cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CC 4924 bytes
SHA-256: 2a661d2a4ab9358262fb787a369a8c069251ef70b315c37b69db5d5f70481bcd
font_01_sfnt_off00012a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9C 10820 bytes
SHA-256: 85d7a50606ddb054ba81ef69e201866c6993bd1f721e69b2b18a2faac98d1546

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