Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a442b1ecca95e65…

MALICIOUS

PDF

72.6 KB Created: 2020-12-25 04:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8dcce4ada4e46b4a11cd3e16492cabc5 SHA-1: 41359a26e8f1d33f4d54c6b3457f11dfdb7d67f0 SHA-256: 4a442b1ecca95e655348eafe61f84fb63496268920bf3374a18845e727034627
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious URL, which is likely part of the lure. The document body, though heavily obfuscated, suggests a theme related to game cheats, further supporting a phishing or social engineering attack vector.

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://trafficel.ru/strik?utm_term=all+cheats+sims+3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488100/normal_5fd08566bb2df.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/Egdieij/dead_zed_3_hacked_all_guns_unlocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414678/normal_5fcee0761ee3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/befarekogol/wedupatizexukimuputevuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfcdbc26-5304-44e0-a18c-fe762d646350/apk_crack_tool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f8de155-fdcb-44da-b796-5e728d91e9b8/3940310882.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/sojosogavuzirupap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5794c9-73c7-4db2-99bd-348bc75aa8e6/vukides.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/hotmail_email_sign_in_page_web.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/sekemerunovopujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/687e21dc-be3b-4bd0-8676-41548de9c69c/kebilegawokuzezagavor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d08a7c7-1491-463d-8c6c-9b6cca170808/50361182360.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_off0000e036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE036 5096 bytes
SHA-256: 173d4e92478f0299b105fb4f4e254c58dd27f722d3b2a81bf3ca9afb0f872083
font_01_sfnt_off0000f168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 10804 bytes
SHA-256: 556c867cf26afb75e950b6112389f5fb3822ede211bf402bec43f9b87f405bfe

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