Malicious PDF — malware analysis report

Static analysis result for SHA-256 b193976b7a264183…

MALICIOUS

PDF

77.5 KB Created: 2021-02-24 08:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: de523a76d01e888fa28b789ab219d7ca SHA-1: 4bd583d141fef3aa9be4e1e779de32de58a82a47 SHA-256: b193976b7a264183604b8f6096914789ea2d669ddfc397a454cf4674405cc4e3
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to 'seumenha.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, appears to be related to search results, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=interior+designing+schools+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477379/normal_5fd083bed1c17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443619/normal_5fe5088ea626a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478683/normal_600986399504f.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/idJn5hc/34205486466.pdfIn PDF document text
    • http://fashion-deals.xyz/agrologic_chick_scale_103_manual2zxt6.pdfIn PDF document text
    • http://jelolizabuvixi.22web.org/numbers_in_spanish_1-_1000.pdfIn PDF document text
    • http://inglassrus.ru/cub_cadet_xt1_lt46_parts_manuale9cao.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412387/normal_60035ab81685e.pdfIn PDF document text
    • https://cdn.sqhk.co/wemowubire/d8idZ4E/swag_hd_wallpaper_1920x1080_dark.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/RBiegjS/amtrak_schedule_effingham_illinois.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/jeihKvm/bisopefuwutivekobib.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
    • http://fokozagizek.rf.gd/nursing_breast_anatomy.pdfIn PDF document text
    • http://zunijakokusageg.epizy.com/circle_circle_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/gethsemane_jcs_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/yagi_uda_antenna_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/28364204812.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/what_is_the_best_battery_lawn_mower.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/android_10_easter_egg_not_rotating.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/63324883423.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/67756444438.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_off0000e818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE818 5076 bytes
SHA-256: de09dd239288ceefa9430aa3c52554a2ac87efbd6b34011838e1a1c7c6304168
font_01_sfnt_off0000f924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF924 9864 bytes
SHA-256: 3dfea955080c91a156e367b9189bfe8225c04cc6b99841f71ac02ba78b4f6c31
font_02_sfnt_off00011abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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