Malicious PDF — malware analysis report

Static analysis result for SHA-256 909adaf8dc841f91…

MALICIOUS

PDF

97.2 KB Created: 2021-06-04 16:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 7e6fb7ee6b6bd4cdde1a68b63761f810 SHA-1: 8a0ee7fb2180db3af106eb3b2ec584c56e002745 SHA-256: 909adaf8dc841f91def41344069c102abf81a375160d341de02c0042937c656e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to be a lure for downloading content, specifically related to 'gta sa cheat codes pdf'. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site or downloading further payloads.

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://xajibur.ru/123?utm_term=gta+sa+cheat+codes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476427/normal_606c8ddd612d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505363/normal_6063b908cc049.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_5fdc3bc149fe9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5fedd6524687d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478947/normal_5fc612b124119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5fdebae2d56ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449417/normal_5fe4f0f86351d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_6023d0e69e8dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406782/normal_6032e8242a175.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450511/normal_600419cac33a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_606887ca7667a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5ff65a86e221a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373016/normal_6004e7d697add.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413703/normal_606cbabcce285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457302/normal_6035b3dc22726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_6023dd9b9121a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488330/normal_60156932e267f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413238/normal_602a027a98bf4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zopujoxobug.pbworks.com/w/file/fetch/144424101/cellular_respiration_grade_11_questions.pdfIn PDF document text
    • http://bojirakaj.pbworks.com/w/file/fetch/144611088/probability_and_random_process_by_singaravelu_free_download.pdfIn PDF document text
    • http://risoxef.pbworks.com/w/file/fetch/144436713/forbidden_kingdom_full_movie_download_in_tamil_isaimini.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_off0001400f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1400F 5144 bytes
SHA-256: 325ca40d89db1a9557b9fda6c94f2c361c68865c4ee8b8cea9385497c9d22229
font_01_sfnt_off00015196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15196 11384 bytes
SHA-256: bf8d2d283282700145233c6360b25cf3a3ea862716b67b98aabcc9cc12591195

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