Malicious PDF — malware analysis report

Static analysis result for SHA-256 372777b0945266c0…

MALICIOUS

PDF

83.8 KB Created: 2021-02-22 13:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8f7a9e9b1110b1196141dd2af47d51b8 SHA-1: a9df75c57373276b155e9c6e0b84c458fe120bf8 SHA-256: 372777b0945266c0a81943f7e6bfcc5617375ecdce7e9d70c8a24abf53d6d5b3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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://seumenha.ru/strik?utm_term=how+to+stick+weld+pdf PDF link annotation
    • http://quinzsy-studio.design/catholic_vs_protestant_reformation2ds0y.pdfIn PDF document text
    • http://legendbilisim.com/719430497438qyyu.pdfIn PDF document text
    • http://erogancolumbia.site/26466296095s5c0s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5fe718865defb.pdfIn PDF document text
    • http://burrrhey.tech/zevexutev23rlx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_60207a274f8a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_60226dca63abf.pdfIn PDF document text
    • http://gratoramaa.space/jadwal_piala_dunia_2018_formatwhvpo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365562/normal_5fff125d9e260.pdfIn PDF document text
    • http://fruit-italy.space/685940183588v999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vejawotivifima.rf.gd/greenhouse_effect_and_global_warming_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/game_android_tekken_6.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/81702718363.pdfIn PDF document text
    • http://kesekerezox.epizy.com/aphasie_transcorticale_sensorielle.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/datubagodogijavuvisanobib.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/angry_neighbor_mod_apk_3._2.pdfIn PDF document text
    • http://vikalasur.epizy.com/lojoxiboximeferavimegar.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5E 4960 bytes
SHA-256: 71e449f8a0a9af062f624626418b90236704b5a95b0f879416ea80edfad68f97
font_01_sfnt_off00011e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6C 10516 bytes
SHA-256: ce4d0faff0c16940c71a2fb0e0155cbc66760a796019afbd547a7b5e62b49c73

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