Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9d4d27281a319b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 22:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b0aa61b75a8ba233f4e6d884c94e2caa SHA-1: 896a3c8bec4dfda9b32f0910646e5e188de2c554 SHA-256: 0f9d4d27281a319b5d232065f15e0eb3e3b6051e9c26b7ac634dfe1f392d59aa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://jacksth.ru/strik?utm_term=shadowrun+returns+walkthrough PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4531523/normal_5fdff39f251a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417213/normal_6006f1fe96630.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxogatuv/hjhbb2H/tap_tap_fish_abyssrium_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/fChjd76/88470788325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5ff9817e42200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_5fd8574b3233e.pdfIn PDF document text
    • http://ig-about.net/60651071506ys4df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458412/normal_5fc95912592fc.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/Cjc3jiX/dotefapotoxujejosa.pdfIn PDF document text
    • http://casbah2point0.com/3184733858mmvp6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_6023c79449e58.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/jlhhipD/xamumuturabumik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366407/normal_5ff76647636f5.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/grifiaU/invisible_ios_text.pdfIn PDF document text
    • http://sexedate69.site/jubadoky3n0.pdfIn PDF document text
    • http://shmelev.pro/67588001944g608e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mamuzov.rf.gd/anambra_state_polytechnic_admission_form.pdfIn PDF document text
    • http://xesupunugotim.rf.gd/fisutu.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_off0000d851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD851 5344 bytes
SHA-256: eb7e8dc588c45750d533c42f6d0c01c0ee864c58dde26d1a3e2f64fc230a398f
font_01_sfnt_off0000ea8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 11128 bytes
SHA-256: b8623a280339bc5fae5d8122151745d935c6ba35e2fb82b328183c3f91f01851

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