Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd83c82b485d017…

MALICIOUS

PDF

74.2 KB Created: 2021-03-09 18:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 25ae10497826b2efbd8fd164628ea140 SHA-1: 8d65ad2c66fda5fff9c8a60007f7bb807cc81643 SHA-256: 0cd83c82b485d0170870ddcbf358e715a642625227634cc761740656012db001
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into accessing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=the+beatles+yesterday+sheet+music+free PDF link annotation
    • http://mailedflkf.site/dynasty_episode_guide_season_6e4ov9.pdfIn PDF document text
    • http://ehaberdevlet.com/93772866169cy59e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485305/normal_603a9787d6168.pdfIn PDF document text
    • http://lightly.store/38028511126e5xww.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/bggb7gf/up_swordsmanship_training.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/gdgigdc/fiwofarepit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483070/normal_5fca882a79020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370555/normal_600c47c5161a3.pdfIn PDF document text
    • https://cdn.sqhk.co/sisowufabo/oRgiCCF/hockey_goalie_fight_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_5fdbdd2eb6b6c.pdfIn PDF document text
    • http://amst-watch-v1.club/gojozudilopomolugadezub06gy.pdfIn PDF document text
    • http://bostpolamos.site/46245910137b2g8x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/87406985982.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/free_decatastrophizing_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/nexawomugivemuvosarivivo.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/list_of_past_tense_irregular_verbs.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/plantronics_backbeat_go_2_wont_pair.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/eva_luna_montaner_matrimonio.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/wokuzojesakerawaboj.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/29068005473.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/julatopoxebedikesok.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/prepaid_insurance_balance_sheet_example.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_off0000e4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D6 5452 bytes
SHA-256: b089c3b7c6db1e50a5fc86f65bf62bc15e7e3cdd71a5f34de610845199fd0796
font_01_sfnt_off0000f73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73D 10520 bytes
SHA-256: 12256a204f0555c36991e9a48d72c4d70df013881d3424440747759dc29114d2

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