Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd114ce9accc0d3…

MALICIOUS

PDF

359.2 KB Created: 2020-12-20 03:29:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2025270721028deddd57c5d9baed845b SHA-1: 946b677b1b6b0026ce17e9f71da5ec132bab6c49 SHA-256: 7bd114ce9accc0d33cb5b685e0c56383b83fe810969283937df4d338b6a86c2f
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan behavior. The presence of an external URI pointing to 'traffking.ru' suggests a phishing lure, likely related to the 'Patagonia care guide' mentioned in the document body. Although the document body is heavily obfuscated, the heuristic 'SE_URGENCY_LURE' indicates the document attempts to create a sense of urgency. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/strik?utm_term=patagonia+care+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447466/normal_5faf0f2e259eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382973/normal_5fc8120f3b6e6.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/vunizi/ielts_speaking_part_2_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50bae7d0c8f249d5b975a/t/5fc5853b9d793648404a5d6d/1606780220686/sunnyvale_library_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b7e1ef-ebb9-4bb0-95e4-dce6d3e841f4/68546214394.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1273e403f5353fd9754a9/t/5fc3082af81c9a2a0c062dfc/1606617131016/copper_bottom_cookware_on_electric_stove.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc800ff65a9a5fd4920f89/t/5fdcc243354b8b0b882afb50/1608303172209/meal_plan_template_google_sheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc13bacfa04221c714cacdc/1606499245470/17850993011.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/sesanowapuponanoruw.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/dietary_guidelines_for_adults_starting_on_hemodialysis.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_off00052af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52AF9 13836 bytes
SHA-256: 86e370f0e04d33828bb105e6ebf2899c12a60e47d88ced5d8fd323a69a09bb28
font_01_sfnt_off00055586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55586 4896 bytes
SHA-256: 0f590ba396b62ffa1a8e756e71f74a5c4ce66e8418a7cd892c4e9a4aafc96a51
font_02_sfnt_off0005663a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5663A 11532 bytes
SHA-256: 55f1cca1cb5fbddecae0b14811e52913be370c67655243e0af593dc4a08bf121

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