Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6243cb422569c8b…

MALICIOUS

PDF

135.6 KB Created: 2020-12-26 09:35:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3da4ff54e21e81367233959f8ca6a37d SHA-1: 1722861349c7e8f6d0fbecc8ada56517860885ec SHA-256: d6243cb422569c8bdbbb421ef2a17f7c2c5de7f79109906e53c4952d9bd1345e
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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. It contains an embedded URI pointing to 'trafficel.ru', which is likely a malicious domain used for phishing or malware distribution. The heuristic 'SE_URGENCY_LURE' suggests the document's content attempts to create a false sense of urgency to prompt user interaction with the malicious link.

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
  • 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=acer+cb3-532-c47c+15.6+chromebook+manual PDF link annotation
    • https://cdn.sqhk.co/vaxikinanibu/ij8gfhe/auto_clicker_for_mac_that_works_on_roblox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505839/normal_5fd7882f08e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_5f94d273a4377.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
    • https://uploads.strikinglycdn.com/files/572d338f-5053-4477-9b9a-762dbd594594/arizona_renaissance_festival_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/mevebiperafawen.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/26844571959.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/zalikimusepefe.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/4943930962.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/4921567749.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/jarujuzilifajawurixonolor.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/60489341487.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/tixuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/tapilepevimuz.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/53935044898.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/44510637446.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_off0001c76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C76D 5668 bytes
SHA-256: d1ae86a4f65ea2e954b07ff72fcbe7fecbbcb06b071e5b59793a848e1a105dd2
font_01_sfnt_off0001da9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA9B 12352 bytes
SHA-256: 3a40b762c3446297231992aab5154d391c8d3d6764661e453248173d564f064d
font_02_sfnt_off000202e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x202E0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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