Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfd0d1c25166bc4…

MALICIOUS

PDF

101.5 KB Created: 2021-03-09 14:48:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5513844b1e54b9b8a54973639876eeb2 SHA-1: 4bac1a1ecc416b26a46d253b88da970e8fe61725 SHA-256: 9bfd0d1c25166bc47afe1e5b13c1a3a5d3f0565af19cd4b12a561b3d927e0fce
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to search queries, further supporting a phishing or social engineering attack vector.

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://midufefew.ru/strik?utm_term=is+the+dark+tower+on+netflix PDF link annotation
    • http://tuduvodakep.mypressonline.com/rodisakoleganesutumow.pdfIn PDF document text
    • http://pegijegur.mygamesonline.org/autocad_mechanical_drawings_download.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/wotifenibodamozexokeku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449602/normal_600e94f10e659.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/84802397089.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478146/normal_5fffa4e4e6354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_604206ebdddb7.pdfIn PDF document text
    • http://form-copyrightservices.com/how_do_you_do_capital_budgeting_techniquestgwwt.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/kumumumexuwurutivanaja.pdfIn PDF document text
    • http://taher-tcac.com/bios_life_e_unicity7eddu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454287/normal_5fdeeaced805c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_602a17f648bf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380700/normal_5fdd406ff1ebe.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/neviziwufawalawano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489717/normal_603cb6f53b773.pdfIn PDF document text
    • http://fagilef.getenjoyment.net/74425237972.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/jusuberu/how_to_learn_python_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/53143956784.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/islamic_calendar_2018_pakistan_with_holidays.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/bauer_bodoni_bt_font_free.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_off00014ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CCF 5156 bytes
SHA-256: 1dc3c7c1bc53bdb09a91cfb8ed38a0611b965df2da03a4ba2282f2658fd0b74d
font_01_sfnt_off00015e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E68 13104 bytes
SHA-256: ea48b74bc83c1233ce9dba442b9000939964828cbfaf60f4e7f21415eea41a17

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