Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f29ab6c7f92166…

MALICIOUS

PDF

80.7 KB Created: 2021-03-17 20:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 467fc73c02d4bba88831b21b93412633 SHA-1: ea97799ca6e704b3e500857ef17c685dc4bd80e6 SHA-256: b6f29ab6c7f9216694b4b63eb3d1c79df8e06cbeff01ac4bb8e3848dcaf7a656
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a garbled attempt at presenting product information, serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/aws?utm_term=fender+mustang+i+v2+20-watt
    • http://levantegroup.net/1952210366xy2sx.pdf
    • http://atomyimperial.ru/what_is_the_mood_of_dark_they_were_and_golden_eyedwxlu2.pdf
    • http://hayatevesigar.online/minaxubunajis65wv.pdf
    • http://kanaxade.mygamesonline.org/which_fruits_are_gluten_free.pdf
    • http://50off.pro/golf_battle_cheats_2020loq61.pdf
    • http://bitsracing.net/what_are_the_major_rivers_in_europe_and_how_are_they_used7sm9a.pdf
    • http://tidirakozodawon.getenjoyment.net/how_to_fix_laser_on_ryobi_miter_saw.pdf
    • http://vknart.xyz/derokakokufezemanalmiibx.pdf
    • http://roboludawu.mywebcommunity.org/biwosonizotewelinatamo.pdf
    • http://it50discount.pro/clinical_sas_interview_questions_for_3_years_experiencejfku4.pdf
    • http://mainsale.info/98836882351yt0j0.pdf
    • http://setlyb.online/filter_for_snapchat_games_for_snap_filterscav4h.pdf
    • http://gatorama.fun/wopesonajitivibariweta5p7o8.pdf
    • http://kolomata.ru/nepiwikirakoloxutun683qb.pdf
    • http://table-wait.com/37073735401gx9pu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e53c8fcc-339b-4d8f-83f6-44ddc8c6ace4.filesusr.com/ugd/1ea9c4_852ea1ceef834e048e4b01df309baed9.pdf?index=true
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_3d28ef970ee94759822eb23d0500dccb.pdf?index=true
    • https://93641f3c-03d3-4c8c-b6db-0fd9bfabe798.filesusr.com/ugd/384ca7_509c3ca58aad41b0806aecd5f4295768.pdf?index=true
    • https://ff743420-c5e2-4527-a456-70ddb2a1abd8.filesusr.com/ugd/5178f2_52de9f44399f4c69a5437cbd77276764.pdf?index=true
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd79.bin
05ee43fe1147e95e58e76f2ff5f867d2bcb1baa21154c07aab3a3b2422347d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD79 5524 bytes
font_01_sfnt_off0001104d.bin
44269487f0cf0eb48a317c976f1b4780861d062670a91e87797f4efa3b121176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1104D 10824 bytes

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