Malicious PDF — malware analysis report

Static analysis result for SHA-256 1526e7c7960c39fa…

MALICIOUS

PDF

82.6 KB Created: 2021-03-26 10:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f39b3c3ea762dff6a805d0ae788b6b1 SHA-1: 2cb1a2152522a840dd6ce0f4a21d1975abe436f8 SHA-256: 1526e7c7960c39fa60d1b4333f5e919cb2a1937cabfd3872425fe499df5f4092
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a domain associated with malicious activity, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to carpet cleaner usage. The presence of external URIs and the ML classifier's high confidence score indicate a strong likelihood of malicious intent, likely for phishing or malware distribution.

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://seumenha.ru/strik?utm_term=how+to+use+a+hoover+pet+carpet+cleaner
    • https://cdn.sqhk.co/kitatoze/7vKjjdU/jack_s_flight_club_phone_number.pdf
    • https://rovalexi.weebly.com/uploads/1/3/4/5/134598456/480460.pdf
    • https://cdn.sqhk.co/sufiwotag/iije1jK/xbox_one_hitman_games_in_order.pdf
    • http://rostov-mobile-doctor.ru/sonotefidobupovomepeeutxm.pdf
    • http://dkshlyap.ru/2228288017sf36z.pdf
    • http://drilltech.info/kuvetizd8tlx.pdf
    • https://gotakepe.weebly.com/uploads/1/3/4/7/134763382/xasipakokeg_wolaka.pdf
    • http://pubgucbayim.com/posawapifunetivilajig1bbj.pdf
    • https://cdn.sqhk.co/bivatesiromu/LDjdul4/22290693420.pdf
    • http://50offshop.info/zufadematokimagbmriv.pdf
    • http://raisinsapp.club/rawasidakonituzojubihpq7.pdf
    • https://xeronatorelej.weebly.com/uploads/1/3/0/8/130874120/d1d8f.pdf
    • https://cdn.sqhk.co/pufowuvikij/JRjareK/10604295502.pdf
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/d56d05b7ba07b.pdf
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/pibawomavozubu_semaligi_junux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/guvovigo/web_design_templates_ideas.pdf
    • https://s3.amazonaws.com/gimisorixosu/boater_exam_answers.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/febreze_bissell_cleanview_replacement_vacuum_filter.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9ff.bin
04f9d0c10b9d1e4b37e4679f8096ffde52653d1d1fab698459c672a48975456b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FF 4968 bytes
font_01_sfnt_off00010af1.bin
db6f063f598441c2ba124e82881070fb4870477daafdf4efc26173c280d0e881
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF1 10568 bytes
font_02_sfnt_off00012ef1.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF1 4324 bytes