Malicious PDF — malware analysis report

Static analysis result for SHA-256 419dcc4328688e27…

MALICIOUS

PDF

103.1 KB Created: 2021-03-31 21:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 974e8167cadc364aa56960d1418ad3c0 SHA-1: da835d56848e39420016e4b5f1bbd8d642ab749b SHA-256: 419dcc4328688e27301a70cfac74cec2bbfe7456ba33660bd43a90ff37fc0907
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. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://bologen.ru/award?keyword=como+aprender+aleman+pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn-cms.f-static.net/uploads/4454546/normal_602e622ad1a02.pdf
    • https://dowozazufexu.weebly.com/uploads/1/3/4/6/134606261/bebesuz.pdf
    • https://mapatujil.weebly.com/uploads/1/3/1/4/131454051/51676bbe126.pdf
    • http://idealicaitalia-ufficiale.site/traxxas_summit_body_clipswa2xp.pdf
    • https://petuxomurekag.weebly.com/uploads/1/3/0/8/130874153/e946a.pdf
    • http://usesucre.pro/regofasurewizaguzibogd4d.pdf
    • http://tazibesemelegi.iblogger.org/vodukitel.pdf
    • https://binenivav.weebly.com/uploads/1/3/4/5/134516867/daxinekek-zowagerofo-vojawoju.pdf
    • https://dotomogef.weebly.com/uploads/1/3/4/7/134760479/abda3ed38af.pdf
    • http://walkover.me/fema_is-_29._a_test_answersy8u0b.pdf
    • https://cdn-cms.f-static.net/uploads/4493891/normal_6053c19e9baa6.pdf
    • https://static.s123-cdn-static.com/uploads/4478687/normal_5fe279ea53a3a.pdf
    • https://cdn-cms.f-static.net/uploads/4369501/normal_600ee01c7ea13.pdf
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/xuwutufilib.pdf
    • http://dihtyar.online/99955197008bjzxl.pdf
    • https://cdn-cms.f-static.net/uploads/4470836/normal_602fec7b4bf88.pdf
    • https://zepudelewow.weebly.com/uploads/1/3/2/6/132682561/b6015f33ba.pdf
    • https://static.s123-cdn-static.com/uploads/4376610/normal_5feb28c23217d.pdf
    • https://cdn-cms.f-static.net/uploads/4496592/normal_5fda203bea2a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bireses.rf.gd/29289316685.pdf
    • http://wanuzenupikow.rf.gd/76547637608.pdf
    • http://zitilidi.rf.gd/vobeperesudewiwij.pdf
    • http://putesedesupelo.epizy.com/delivery_receipt_template_doc.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f0b.bin
4a8bb4b06c4e84142ca25a3770e71b6334de4699cc4dc88dd63473241e57ab39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F0B 4692 bytes
font_01_sfnt_off00013ed5.bin
8ce0e884e185494ed4a7bff3a092825451e0f1348a5185e54a1a9ceecc3ce063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED5 12908 bytes
font_02_sfnt_off000168ea.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168EA 16312 bytes
font_03_sfnt_off00017e75.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17E75 4324 bytes

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