Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fca778b6ecad2f6…

MALICIOUS

PDF

592.1 KB Created: 2020-12-31 00:17:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6bb7c0612d714cab6a94dfd8a5951a4b SHA-1: ea68f4b34ad870c63ecbdb8835a35631a53c6c96 SHA-256: 7fca778b6ecad2f6963c3a164c56b3b2cd638df08407de29b498aa277e8f398d
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan and by an ML classifier. It contains an external URI pointing to 'trafficel.ru', which is likely a malicious link. The document body contains urgency lures, suggesting a phishing attempt. No scripts were extracted, but the PDF structure and external URL indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8654

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafficel.ru/123?utm_term=meet+the+heavy+roblox+id PDF link annotation
    • https://jigaxokere.weebly.com/uploads/1/3/4/6/134622899/27ccd33b0c1050.pdfIn PDF document text
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/molivopubulemaket.pdfIn PDF document text
    • https://zokilare.weebly.com/uploads/1/3/4/7/134767859/rexofepuzibonu.pdfIn PDF document text
    • https://cdn.sqhk.co/rubekafux/t6aihgd/shudder_meaning_in_bengali.pdfIn PDF document text
    • https://rimidewazasi.weebly.com/uploads/1/3/4/3/134317879/6236042.pdfIn PDF document text
    • https://rofipufexorijol.weebly.com/uploads/1/3/4/6/134656377/pafoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatapegil/zhhjhii/nojavimutu.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/rimejiguvif/dowugeloxulekabofomo.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/hotmail_email_compromised.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/lorolu.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/arkansas_boaters_ed_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/from_abc_iview_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/articles_of_confederation_worksheet_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/vba_activesheet._cells_format.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/togukatibudepeliligonuxar.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/azure_devops_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008c4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4F3 5108 bytes
SHA-256: 8b5e4d270fe6158a820ab3cb62fa78a6f798f665a8aaab07e2196a717199c895
font_01_sfnt_off0008d66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D66B 22616 bytes
SHA-256: d0a6c3e19bfdcbb595b8118615438dccf11e07e8065958653cc308de341747eb
font_02_sfnt_off0009181d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9181D 16456 bytes
SHA-256: 09950fe4b31be735686ff62af5514d2b53a5bfb704da6865ffdc1e4ae07e539c

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