Malicious PDF — malware analysis report

Static analysis result for SHA-256 49032602978ad95e…

MALICIOUS

PDF

87.9 KB Created: 2021-01-24 02:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4b1f30fa3a3e12d6a561a8049e8595a5 SHA-1: 1fe9d323f7382d7219bc604678bc3702ce5ea5a0 SHA-256: 49032602978ad95e19062a6349c63e6b9aa272b1e03a37279529de7489b1c104
116 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. Heuristics indicate it functions as a callback phishing lure, prompting users to call a phone number. While no scripts were extracted, the PDF structure and embedded URI suggest an attempt to direct users to external resources, likely for further exploitation or information gathering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafftec.ru/123?utm_term=wood+county+ohio+land+records PDF link annotation
    • https://site-1248237.mozfiles.com/files/1248237/26346608725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462352/normal_5fe6ec225a8e5.pdfIn PDF document text
    • https://site-1177842.mozfiles.com/files/1177842/idle_evil_clicker_online.pdfIn PDF document text
    • https://site-1176481.mozfiles.com/files/1176481/halloween_costume_ideas_diy_college.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/as5gcih/badlands_winch_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/jcjbIgf/vitamin_b12_sources_fruits.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/hieiaia/street_racing_in_kansas_city.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/fujadabez/pazabefen.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/87539324754.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/android_game_speed_hack_no_root.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/black_circle_on_army_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/reported_speech_rules_table_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/congratulation_letter_for_graduation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/liverpool_vs_arsenal_highlights_5_1.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_off00011958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11958 5144 bytes
SHA-256: c9af1874ce1834b7dbfc962e5da5e51c892ca946f7cc783231cf3ba7846ad654
font_01_sfnt_off00012ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE0 11512 bytes
SHA-256: a8e68086b3339cbd7a8d901754c0259816700a7b037b65d157d3a4aa73d0901f

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