Malicious PDF — malware analysis report

Static analysis result for SHA-256 604aaf3f24ff81b0…

MALICIOUS

PDF

73.5 KB Created: 2021-03-02 11:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 085f172573a76e9b524b22eecff793f0 SHA-1: d6c3d5490bcd2641f6ee57a34d29e40513f211e3 SHA-256: 604aaf3f24ff81b00628fd7ee05b7a44364cedd712c603ed291fdd3af977beb9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or trojan delivery. The document body, though heavily obfuscated, suggests a lure related to a game walkthrough, which is a common social engineering tactic.

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/wb?keyword=kingdom%20of%20deception%20walkthrough PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5fe690ed02157.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/jilekirasivejodawugusezo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482636/normal_5ff21e3603b6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5fe2a0e611d1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_6032bec790210.pdfIn PDF document text
    • http://keepqifi.space/291771487694m5li.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/ijejcK8/4612133367.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485305/normal_6006a410a3396.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/senodiw/auto_tune_8_native.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/ipcc_2019_date_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/76312373911.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 5396 bytes
SHA-256: fad68efe9135024c60c4e11b823a67974866d630ac9f7fa85b704800b3bf8fff
font_01_sfnt_off0000e8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 10008 bytes
SHA-256: ad53f8e7bf9f90214e13fb13894346ec483deb78b3262b3adfbd6bd67b4a7816
font_02_sfnt_off00010ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3