Malicious PDF — malware analysis report

Static analysis result for SHA-256 1006c781c5be07f4…

MALICIOUS

PDF

82.6 KB Created: 2021-03-30 18:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a9afaa1d808aa7fc7a4e6b151a881a7 SHA-1: 31fb6088139828de8d7d734450b3498ec5c6be0f SHA-256: 1006c781c5be07f402b872165292d33aa6f1540b313903325fbeddcd7370e94f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs that point to suspicious domains, and ClamAV detection indicates it is a phishing trojan. The ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, suggests a lure related to "Wheel of Fortune" answers, likely to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/wix?keyword=wheel+of+fortune+classic+tv+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491173/normal_6009a41ad8376.pdfIn PDF document text
    • http://wurigebabisu.iblogger.org/rabowojetasotuzepere.pdfIn PDF document text
    • http://larts.digital/minogapiglra65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445890/normal_5fcceedb2e4aa.pdfIn PDF document text
    • https://rowigimafusapop.weebly.com/uploads/1/3/5/9/135982222/6023840.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/63f200e84d.pdfIn PDF document text
    • http://cparta.moscow/nj_927_h_instructionsoyeiz.pdfIn PDF document text
    • http://vezemif.22web.org/8738165801.pdfIn PDF document text
    • http://1xbet-football.fun/688293546698s8sf.pdfIn PDF document text
    • http://fresh-ita.fun/mastery_drawing_bookvqus0.pdfIn PDF document text
    • http://oneitstore.info/sony_cdp-ce375_beltsbam8k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef6bb5b-1bb9-411c-bf5d-ae61d885dea3/allora__calzadilla_in_collaboration_with_ted_chiang_the_great_silence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a80208-f2d0-49ed-ba6a-8c32714e37dc/zogizola.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/49865526141.pdfIn PDF document text
    • http://genuvodifurijor.rf.gd/panasonic_conduits_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/brand_equity_research_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff5d3a36-dc69-46b1-9332-f8c57b9ccc92/88270709926.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/3360035071.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/temubupitodum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aee80f82-b345-48ae-83b0-38b39ab4f1a4/18301626784.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_off0001065a.bin
d5ed6a705478afccdc11c0df91ca5c63c45b9b0c35aee69ea0597fb89d58f871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1065A 5132 bytes
font_01_sfnt_off000117e6.bin
2b3b51c2ef16f7228ad0f9109ab74b5afa9b4c7463befd88899c59138643a419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 10804 bytes

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