Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb37f4159ae3a4d3…

MALICIOUS

PDF

72.3 KB Created: 2021-01-29 06:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 798c99d3eae397c1fedb14a81443e0f7 SHA-1: b3aa116f4f7e66c203781c2379a581ed199bae2f SHA-256: fb37f4159ae3a4d3fe6fca39bf7a392d046f475d468e60ef3801a01acb9ff2b4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a phishing page or download further malware. The document body, though heavily obfuscated, contains text related to 'Playstation vr accessories best buy', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/123?utm_term=playstation+vr+accessories+best+buy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408190/normal_5ff89335e6966.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/flVjhgc/zikubuwapikawu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489599/normal_5fc9a2af9bc6b.pdfIn PDF document text
    • http://xexogafuko.22web.org/59244563288.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452852/normal_5ff40c764e50a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476595/normal_6003a3c1e3fc6.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/egfHXha/56056660597.pdfIn PDF document text
    • https://cdn.sqhk.co/wumigapinido/hdukjdd/89991035999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jipinasin.epizy.com/34643845289.pdfIn PDF document text
    • http://xelidamos.epizy.com/video_show_pro_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/mail_merge_with_attachments_google_sheets_app.pdfIn PDF document text
    • http://kexijilavagela.rf.gd/dowobazawijofabez.pdfIn PDF document text
    • http://vukigopi.rf.gd/zuzakuxif.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/kigeke.pdfIn PDF document text
    • http://xapafov.epizy.com/agent_vinod_full_movie_2012.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_off0000de50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE50 5096 bytes
SHA-256: 6d691a9008f66adec08b038a2e7a36299ad51c1a0b6300d97cb1937bacff66a7
font_01_sfnt_off0000efc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC3 10752 bytes
SHA-256: ccb891456ffff6ec6fe2ba87513abd24c2e45c49816ce0e56f694c72f0c6ef86

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