Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fb057f185f25be…

MALICIOUS

PDF

78.7 KB Created: 2021-03-22 12:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e376dd1005fdd9798d3b3275813f836d SHA-1: 5351846cc6b9d776e1c3ce216fb2751dcb2a6541 SHA-256: 18fb057f185f25beb50be09acec018da8764572fc692cb9c8ee82c43c091e677
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. The embedded URL `https://ponafet.ru/wix?keyword=torn+page+of+the+final+truth` is the primary indicator of a phishing attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/wix?keyword=torn+page+of+the+final+truth
    • http://fuziral.iblogger.org/56265009205.pdf
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5ff04a6a719b0.pdf
    • https://cdn.sqhk.co/basinasedu/bVohf4M/hindustan_unilever_annual_report_2012-_13.pdf
    • http://xubaseki.iblogger.org/streaming_video_online_url.pdf
    • https://cdn.sqhk.co/xejadukoxeta/djdhcgd/jerixoxereka.pdf
    • https://fuvalodonof.weebly.com/uploads/1/3/4/0/134012518/9438799.pdf
    • https://cdn.sqhk.co/wujejelot/MgfUgh9/getakanalovunamam.pdf
    • https://cdn-cms.f-static.net/uploads/4445557/normal_6047521413ab2.pdf
    • https://cdn.sqhk.co/wuzomowa/jfhdxge/oceanhorn_switch_physical.pdf
    • https://cdn.sqhk.co/bivadudit/cjakfih/spiral_fast_balls.pdf
    • https://cdn-cms.f-static.net/uploads/4477864/normal_60229bdf581e0.pdf
    • https://static.s123-cdn-static.com/uploads/4421213/normal_5fef5a8dc7d8d.pdf
    • http://gipurasov.iblogger.org/ionic_radii_table.pdf
    • http://fodamibokaf.66ghz.com/july_2018_june_2019_calendar_template.pdf
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/a86bf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bolunivagoxel.epizy.com/valibo.pdf
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_22b69e748b524778b8e285a9e6907ca9.pdf?index=true
    • http://binutovunisiriv.rf.gd/rudaxewawivalukefafojug.pdf
    • http://kodasakame.rf.gd/22043481350.pdf
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_6cb8bba96f3b4dc082e94abdb7d4a9b3.pdf?index=true
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_236df68648ac4d759a06df9cee72dc84.pdf?index=true
    • https://f1c0478e-57b3-422a-b8eb-433964b677d2.filesusr.com/ugd/16c17d_f70a9fb50653499fb3092c8c43182021.pdf?index=true
    • http://vafowoloxesimam.rf.gd/wunutotivuwuzevirixe.pdf
    • https://4228e3e8-6e56-436b-9c2a-5710a6c3a216.filesusr.com/ugd/e32dc8_d0f3c6d39f2545e89817b3f16b6775d4.pdf?index=true
    • http://konomubexidop.epizy.com/bridgeport_vertical_mill_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f60e.bin
4d4576342826bcf7f8bb129dbbc0a5ea0245c1278006813e7ad71b328780fa05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF60E 4932 bytes
font_01_sfnt_off000106d6.bin
702cf1b64f25e67ea377a6fa8b78a36e9716116f504ac90fe8df6bf20cada22e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D6 11208 bytes

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