Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df4a056e49c4b10…

MALICIOUS

PDF

81.9 KB Created: 2021-03-02 05:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 046b74ad4a562df316f283c15d0d279f SHA-1: b1be7a17ca93bfdc291daed94110454caaa7ebe1 SHA-256: 1df4a056e49c4b108427cab60c2c0cddad0998cd1b6174db75c933ec427e20f9
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, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to product information, aiming to trick users into clicking the malicious link.

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://zajinet.ru/strik?utm_term=bosch+silence+plus+44+dba+mounting+brackets PDF link annotation
    • http://allieshouseofhope.com/27385843934qogc0.pdfIn PDF document text
    • http://punevufazeji.iblogger.org/redovowejuzev.pdfIn PDF document text
    • http://naturka.space/is_the_sig_p238_worth_the_moneykefnu.pdfIn PDF document text
    • http://nigma24invest.online/90044793671q2zwd.pdfIn PDF document text
    • http://meziradidanaru.iblogger.org/46845962882.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/veraxawewib/fivosedubufet.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/tamil_songs_keyboard_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/cactus_y_suculentas_cuidados.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/nalaji.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/27636461455.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/2011_rav4_limited_bluetooth.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/45936865645.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/what_does_impression_sunrise_mean.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9B 5712 bytes
SHA-256: f79fa435f2f36c79666cdd88bbe4e2d1eaafc5cc7a34956c714e9a32cb838d36
font_01_sfnt_off0000f1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CF 10792 bytes
SHA-256: 455d622968b623495156e6dacebd78099db9591052f1d2d397dc3ef32bcdb64b
font_02_sfnt_off000116d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D2 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off00012be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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