Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2e35d0364139d0…

MALICIOUS

PDF

111.9 KB Created: 2020-12-27 22:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1d07dd9581ee3a37e54cc573e82735fe SHA-1: e559db3a5506bcc372539c45c3b6924f477f8faf SHA-256: 3f2e35d0364139d05e4d0617dff1b090358eb5eaa6c264192e839e5119580ec8
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL and heuristic firings indicating it is a phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of external URIs and phishing-related heuristics points to a likely attempt to redirect the user to a malicious website for credential harvesting or further payload delivery.

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://traffine.ru/strik?utm_term=does+my+crush+like+me+back+tarot PDF link annotation
    • https://cdn.sqhk.co/puburasar/khjghjP/4_pics_1_word_level_180.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417664/normal_5fe30265ab770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410727/normal_5fae530059c92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5fe763d188735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490265/normal_5fd0a02e4a156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380383/normal_5fddc2264f3d6.pdfIn PDF document text
    • https://cdn.sqhk.co/katafojedul/ihf3hbQ/football_training_equipment_amazon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462379/normal_5fcd3103616d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374203/normal_5fc8f1375aafc.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/gupuso/pakatiwonebikavubagagab.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/spin_class_body_transformation.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/50981680764.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/simple_clarinet_sheet_music.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_off00017e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E54 5344 bytes
SHA-256: 50b9b723354a51c20c6f2448e504932e091a3fe3d46383485e700d013feed952
font_01_sfnt_off00019065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19065 9948 bytes
SHA-256: 32325ce8fa6f54a7512457cadf768296ace55607b571d87625f06cb3db9ae569

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