Malicious PDF — malware analysis report

Static analysis result for SHA-256 434d35cddc641001…

MALICIOUS

PDF

166.7 KB Created: 2021-03-25 07:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: f82ba6343ce5e824be687704b35fd710 SHA-1: e855d865f73ad87886cb5599ba86f3a284670af8 SHA-256: 434d35cddc641001ac06fa07eccd4ee1305d8c3243c92c3c181e0885a3de7336
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URL and document body suggest a lure related to an 'award' or 'favored soul' to entice users to download further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing campaign designed to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=favored+soul+5e+unearthed+arcana+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412900/normal_605067f91c81e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_602acf3a30041.pdfIn PDF document text
    • http://daddytestit.xyz/buffalo_bills_fontzek40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_5fe8bdf9da57b.pdfIn PDF document text
    • http://greenbike.shop/davulisaturuxigoz3ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477156/normal_5fe70392c065e.pdfIn PDF document text
    • https://cdn.sqhk.co/mosepoxik/icibgj6/police_hooter_sound_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420776/normal_5fecfff75660d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_601bf992a7c4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_601296b1db810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_6055334340142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_60117c2b8210d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_60117291b7592.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/jajcVyd/rapunzel_movie_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/eiinXUL/tekolamasoxamarapakipixi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408343/normal_5ffff8ee967b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406213/normal_603aac904826e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000251ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x251AC 5380 bytes
SHA-256: e58ca8a6aa0c8580310ac190edf9b564f11ebd73cb11da4e3864aded49aed34c
font_01_sfnt_off00026402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26402 11608 bytes
SHA-256: 07cd468f144aca57c034fda9c227fb4949ed7cb014a067de03aba5ab6a3dfe4f

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