Malicious PDF — malware analysis report

Static analysis result for SHA-256 8098328deb4f94da…

MALICIOUS

PDF

79.4 KB Created: 2021-02-20 04:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f9d3d471c4b21b8e8952d18e7f14789a SHA-1: 965b8cb7459ee633ecfd7d1cc957e30c38eb6b07 SHA-256: 8098328deb4f94da34f9cb4659c51037088c82a4fb033d55457f119b9a7d76f9
96 Risk Score

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 it's a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware-hosting site. The document body, though heavily obfuscated, contains references to 'Galaxy s9 release date' and 'wkhtmltopdf', suggesting a lure related to product information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=galaxy+s9+release+date PDF link annotation
    • https://cdn.sqhk.co/fakineduxafe/jddjcii/6222437122.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/ShfqWso/talerajezexowu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_6018645edf4e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386849/normal_601bfef78d7dd.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/iilnIBi/masha_e_o_urso_o_filme_assistir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450506/normal_5fc77314bef7c.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/danevef1a4np.pdfIn PDF document text
    • http://winfreeiphone.xyz/easy_jeopardy_questions_and_answers_printablenxjqr.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/f4jjjei/4310401425.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/e2ygdji/sigowiforuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_600d245bb105f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487431/normal_602797f27ccb4.pdfIn PDF document text
    • http://enots.space/how_to_write_script_coveragezb8pl.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/hfdhedc/rifuvufeputivumiri.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/RGwujex/movie_night_menu_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/iak0dha/buzefusasujokujezutadabor.pdfIn PDF document text
    • 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/ritoma/8323734755.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/comic_relief_annual_report_2016.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_off0000ec86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC86 4700 bytes
SHA-256: 543e27cabba8aaadce228ac07d58ef6c9c3fe03c1f5825cbbc4c33210209616e
font_01_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 11348 bytes
SHA-256: 642e4b40041aef38d68d0baa93ed386c440d5c1e3508032d967143346afc2153
font_02_sfnt_off000122a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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