Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5784058b3cd7f9…

MALICIOUS

PDF

79.5 KB Created: 2021-04-04 16:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1b12e7e579bbe213fc6416cc6de6fd3f SHA-1: 241845d927a816bf05a7dc3e97baeb02faa31d70 SHA-256: 5b5784058b3cd7f9d26418cb1e9f01d8408457a28c7a02c909185d1425890c7b
136 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of multiple external URIs, including one that appears to be a tracking link, suggests the document is designed to redirect users to potentially harmful content or phishing sites. The heuristic 'SE_LOLBIN_RUN_COMMAND' further supports the idea that the document may attempt to execute commands or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jottigo.ru/strik?utm_term=sony+nxcam+avchd+mpeg2 PDF link annotation
    • https://cdn.sqhk.co/bebubofawa/iaigvbA/8_ball_pool_games_free_download_filehippo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489414/normal_605cda00f2a8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_60058c975e630.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426421/normal_5fd0648ff10a7.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/81883109128.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/gcMdjh0/short_rider_adventure_motorcycle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_5fd86a2baecf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425768/normal_5ffdc75269481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489843/normal_600361b0290f2.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/futozesuremaxovekumopabo.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxarufodir/jjhigbs/69851490573.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/w6jh3ja/top_top_hot_pot_coupon.pdfIn PDF document text
    • https://cdn.sqhk.co/gitogozune/cgeHwgc/vazibalazobazakolez.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/aSghfGn/touchgrind_skate_2_cheats.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448995/normal_6027782658a9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475720/normal_5fedae752f119.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/41WVihj/38393687910.pdfIn PDF document text
    • https://cdn-cmsIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tibitexil/angry_birds_coloring_book.pdfIn PDF document text
    • http://vuxebezedigelun.onlinewebshop.net/honeymoon_cystitis.pdfIn macro / runtime command snippet
    • https://s3.amazonaws.com/vunizi/92290934812.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_off0000e7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A5 5644 bytes
SHA-256: 203382399936c11cd01a6e4cbe184ea125dad0a23526af498372ace8098b864f
font_01_sfnt_off0000fad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD7 23644 bytes
SHA-256: 18f83e8cb03ddda7516fda371b97f3299c38c33f3d4be7d0bd1b23c08ccdd180

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