Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a6932da7eaad22…

MALICIOUS

PDF

75.5 KB Created: 2021-05-23 01:53:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 777803e0024d717a26e6e9af93544b59 SHA-1: 238cce3738acee9c6a2a84ef06bcafc859aa84a9 SHA-256: e9a6932da7eaad223fc732a97bfed2b6ae657686c0de9ac9c870c3f8d59fecf8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for downloading a game, which is a common social engineering tactic to trick users into clicking malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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://fokemale.ru/strik?utm_term=how+can+i+download+gta+5+for+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468255/normal_5ff22e0c50fb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476437/normal_5fc6dfe84111f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448549/normal_5fe8eafa95d41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454299/normal_5ff97a0b7c3bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_6065192ea6262.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425737/normal_600730fd2ef38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_6033e6ae39f2b.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/b8b8eec0-6c6c-432f-99fe-4c2f23a063ce/30695639811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75c07a5d-215c-4770-b5cd-65317d64e962/is_red_xiii_playable_in_ff7_remake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6707b810-d24f-46ca-9d07-19e9ef0f57de/captain_underpants_full_movie_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f57aa3-df9c-4fa7-904e-fac6ca92a509/tebalajoxikog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aaf30e4-7e03-48bc-b11f-69815a0d6f6e/kenmore_700_series_washer_wont_turn_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60da2188-c4a8-4a37-a1de-c971973dbe55/luwewotodaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e81cb37e-6910-457c-8649-c44a730a72a3/jekodes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c7b3be-acd0-431d-ac98-c285dd5738c3/67373812893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529cbe7b-2f67-404c-a905-67485da75613/flammable_liquid_storage_regulations_alberta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de6fb20-4a77-4519-b8c1-3f0ea5cee8e6/35670906038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eca3d38-22ec-4dd0-9108-9427c97c0abd/romakotibajiv.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_off0000eb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB47 5188 bytes
SHA-256: 12c45968838f5e6deac18d2242dd1ee99cdf8e3ca6d48513466b6458096dc470
font_01_sfnt_off0000fd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD15 10452 bytes
SHA-256: 7e6163376075eb8bbd22f7e67eca06b4af4d40d22e02ab724a12847ba8b779e2

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