Malicious PDF — malware analysis report

Static analysis result for SHA-256 79171091e4d733a8…

MALICIOUS

PDF

180.8 KB Created: 2021-03-24 04:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 874c80a67e6ac61baa56b01d52e63ad8 SHA-1: 74d569acdc65a7720805f230d44dbc82bfb22a1b SHA-256: 79171091e4d733a8f39f6b1b78816ee4dedc4a72e560054807f286f164aab27b
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 URL, and ClamAV detected it as a phishing trojan. The ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, contains keywords related to a 'Chancellor's list' which could be a lure. The presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

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://ponafet.ru/wix?keyword=chancellor%2527s+list+uncg PDF link annotation
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/lulutugabinoko.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/ghOtvpk/23953001607.pdfIn PDF document text
    • https://cdn.sqhk.co/fikalibumi/gh61mjh/delawamilomixapiw.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/jdihbib/archivo_para_tener_skins_de_among_us_gratis.pdfIn PDF document text
    • https://molemopiwe.weebly.com/uploads/1/3/1/8/131856052/pulepiteletufalaro.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/Sbi6uje/sibanolubefusewatefivofak.pdfIn PDF document text
    • https://labupapem.weebly.com/uploads/1/3/1/4/131406977/95aa383e3c75f2.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/she8Zib/bivokupozopiwuzugo.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/dazifozixawus/viwofofufesoledoxosugi.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/fozamotowibaxanebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62362b8-2297-48dc-859a-a07651728102/rt-ac66u_router_login.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/bombay_priyudu_telugu_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/85895037360.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/durizakemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf2b475-4246-403b-9d31-018a9e08e038/laditenanusiwalulo.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/18067682332.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/instruction_guide_citizenship_canada_minor.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/96423368632.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/69883941330.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_off00028fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28FCA 5000 bytes
SHA-256: f5575e18de8db62286e76ff896ca8825a31f48bb2bf9380208082852d9414422
font_01_sfnt_off0002a0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A0C3 10312 bytes
SHA-256: 411eff048a2765510540f81d1a6365560e2a2158fa55a1bc0fbaf4222cecedc8

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