Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ddb0368f28f5d1e…

MALICIOUS

PDF

108.2 KB Created: 2021-03-07 22:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c12daaa29fc7f791e5c8b395ff38903 SHA-1: 1244bfbf5707503bbb7b16781b57b6959721b24a SHA-256: 5ddb0368f28f5d1ead6ac288b8250b6af531beed3bff5736ff002f9ac0d522d3
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/aws?utm_term=henry+james+daisy+miller+quotes
    • https://static.s123-cdn-static.com/uploads/4410207/normal_5feb2852e093b.pdf
    • https://cdn.sqhk.co/bulelovuroga/jagdTXL/jetazalubitepemova.pdf
    • http://nabuvegawemuk.22web.org/bhagavad_gita_sanskrit_gujarati.pdf
    • https://cdn.sqhk.co/niporatibu/aHsjbjg/legoz.pdf
    • https://cdn.sqhk.co/zojixemem/hhgfgfh/sokes.pdf
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fefdc007ed5c.pdf
    • http://gerisekazaleg.22web.org/zowadudafojupowewozemofa.pdf
    • http://zumigiguba.22web.org/how_much_do_interior_designers_charge_in_india.pdf
    • https://cdn.sqhk.co/diwiporeb/Whhjdij/offroad_bike_racing_3d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bepukuba/free_printable_periodic_table.pdf
    • http://vadezofoxamar.rf.gd/prostate_biopsy_procedure.pdf
    • http://tosopipates.epizy.com/brackets_editor_for_linux.pdf
    • https://s3.amazonaws.com/sixenogafopoj/handing_over_report.pdf
    • http://tagekef.rf.gd/sasebegeriroradidigef.pdf
    • http://kugugoroxe.rf.gd/41968115191.pdf
    • http://sitasuwa.epizy.com/what_is_bootstrapping_in_bioinformatics.pdf
    • http://gizexagivet.rf.gd/35179682344.pdf
    • https://s3.amazonaws.com/lofese/celsius_to_fahrenheit_conversion_chart.pdf
    • http://tituzirafosexi.epizy.com/7882526540.pdf
    • http://xilavivugup.epizy.com/all_tamil_comedy_video.pdf
    • https://s3.amazonaws.com/widiku/wamuxixixodiniv.pdf
    • https://s3.amazonaws.com/saxefi/mazigomoreveneropufita.pdf
    • http://wawopuviginase.epizy.com/devarukurobufedi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015952.bin
cef82af7b0616f6e5f57ac56db6f0ea29557b083c54899536f5f4328ddbddc28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15952 5236 bytes
font_01_sfnt_off00016b0e.bin
f19297b7dc1d71619fd5f79a06cd85b5dde03c1e8531a2b131352bae2c7fd668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B0E 10192 bytes
font_02_sfnt_off00018df9.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18DF9 16204 bytes

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