Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce40d9c5e68a7503…

MALICIOUS

PDF

84.3 KB Created: 2020-12-27 08:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 63051c16091dd55519b0f5a28cfd9a0c SHA-1: b8958ed3c203a6b84e525a67c7d0192b924a655f SHA-256: ce40d9c5e68a75038a3d65182a70996aa40e0b82a3f3e469de24d015f379c6d7
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and the document body suggest a phishing or malware distribution lure, likely attempting to trick the user into downloading a file. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, pointing to external resource interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/strik?utm_term=gyro+buster+apk+mod PDF link annotation
    • https://cdn.sqhk.co/busosuwik/I4jaLnv/simesunemidokidubogik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486772/normal_5fdb405d7acdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f88aae660199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444874/normal_5fa1e72c361c6.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/KHJhb6L/messenger_lite_login_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/nhdiage/sceptre_tv_32_inch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5fbc90e8a99b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402706/normal_5fe14674e91f4.pdfIn PDF document text
    • https://cdn.sqhk.co/febenanedibu/jjjfgcc/tiruguluwusirawojifusupix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8fce7f7970e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494674/normal_5fab9834c9e48.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/5c0af111-2ff3-477f-a4dd-7b8b6eeb9615/heroes_of_the_fallen_lands.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/binomial_examples_with_answers.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA51 6396 bytes
SHA-256: 3b6f6ee4ab88f52f8a07c2f016577daadb90591fcce32f6fde60ef038e18747f
font_01_sfnt_off0000efe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE3 5408 bytes
SHA-256: 6732d017e673de0281d20c613dcb51d30bc077e5646ae0a8f0639da0a57e011e
font_02_sfnt_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 8068 bytes
SHA-256: 15c562f2f8409d47b6b1a0ad900148124fc7fee6a9fe9f36541504cdeca48cf3
font_03_sfnt_off00011cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFC 11440 bytes
SHA-256: 545f1a39775f30af315d9c88edcc949886c76700bd83b0af86545707c59bbe68

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