Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca15c7d003e887f3…

MALICIOUS

PDF

86.2 KB Created: 2021-03-21 06:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0ae17a55d9a1d04c10f18ecbbef564a2 SHA-1: bd280659735c705f2ebca57c96ef9b7390cab188 SHA-256: ca15c7d003e887f3cf48eaabbf197582475fcd1988c3b432db25d9dfff3ebb78
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Achtung panzer deutsch pdf', suggesting a targeted phishing attempt.

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://pelibifir.ru/strik?utm_term=achtung+panzer+deutsch+pdf PDF link annotation
    • http://sutovuresas.mygamesonline.org/69757540067.pdfIn PDF document text
    • https://cdn.sqhk.co/totarujined/hdigxhh/zenunirokizoza.pdfIn PDF document text
    • https://cdn.sqhk.co/siviraboriru/jjbiaQj/memim.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/jghbjjQ/clean_road_bike_chain.pdfIn PDF document text
    • https://wopegukozawemab.weebly.com/uploads/1/3/4/7/134727928/56906d8a60.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/fobupemunigap.pdfIn PDF document text
    • http://zoxatib.iblogger.org/best_star_finder_telescope.pdfIn PDF document text
    • https://cdn.sqhk.co/mumeriretepi/fhcm5ij/uno_tm_friends_downloading.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/jobavo/the_spell_of_the_sensuous.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/greyscalegorilla_guide_to_redshift_free.pdfIn PDF document text
    • http://jetetejev.rf.gd/61213572976.pdfIn PDF document text
    • http://suferipuwa.epizy.com/36907777792.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/9241130759.pdfIn PDF document text
    • https://2ea3657d-1c4c-40dd-8491-58aeeb8dc933.filesusr.com/ugd/18a85a_e416216b6bb544c0b62aa20ad31be8d2.pdf?index=trueIn PDF document text
    • http://posikin.myartsonline.com/biochar_pyrolysis.pdfIn PDF document text
    • https://d7e981a8-8c4a-445e-aef0-60d3d4911bd2.filesusr.com/ugd/65d69c_2cc87f13dec9454bb83341004395cec9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajixe/vasulinotulavotebafa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10710 5148 bytes
SHA-256: bcb078873b0179d26a7a25ccda9d356babce70ea7b5a1a79ca9e17dbf645ad37
font_01_sfnt_off00011889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11889 11136 bytes
SHA-256: 099893159784ce29478c1c0207cdef01823235f91af229cc17ad614392913bc5
font_02_sfnt_off00013d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D63 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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