Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd96bf2f310df0c…

MALICIOUS

PDF

73.7 KB Created: 2020-12-23 08:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 53d87caba4fb6971e81dd27e1f3ecec6 SHA-1: 9c73da73b660fa23f64aa5c126d6ed8dbba46544 SHA-256: efd96bf2f310df0c824ef538e5e6b486c18da317d8713738a27fc585413789f9
116 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, which is presented as a search result for "2048 unblocked games hacked". The heuristic 'SE_CALLBACK_LURE' suggests a phishing or tech-support scam context, further indicating malicious intent. No scripts were extracted, but the overall pattern points to a phishing lure.

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/strik?utm_term=2048+unblocked+games+hacked PDF link annotation
    • 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://s3.amazonaws.com/lupebesu/kyocera_duraforce_pro_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/schaefer_bus_schedule_detroit_mi.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/future_diary_redial_funimation.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/56126542109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/019a6e6f-033e-4241-841e-61795eba94f0/1673710343.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/84538227029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f709698-0fb2-428f-b936-f70a7e116ae0/jifubixufumi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5381a405d5340f345f063/t/5fccaa53e43f2b00a8a41dd4/1607248468375/96196043708.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/alkaline_ash_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/29720845984.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc366b360f2895dc1f7c2c1/t/5fcb6762a0b42e3566a7451f/1607165795187/roblox_free_robux_promo_codes_february_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70ec7a4d75e5252f2a30b/t/5fd17268b0f0f842d79b6672/1607561833352/knife_sharpening_wheels_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/envision_5th_grade_math_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/cogic_womens_manual.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_off0000d55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55E 5676 bytes
SHA-256: 61c963d5962a945d878d979b79151587075c9b74e5abb3841f2a152bf05388c3
font_01_sfnt_off0000e873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE873 10456 bytes
SHA-256: a0e7133c2732d64b561436a208d6da932acd5e96e8b38a3b7f6e075ec1b67515
font_02_sfnt_off00010c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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