Malicious PDF — malware analysis report

Static analysis result for SHA-256 114185718f05a7ac…

MALICIOUS

PDF

75.6 KB Created: 2021-05-22 02:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0c9afffed04227b480c8bb9e49227364 SHA-1: 486c1f7d1001f1a650910e822c2525aeb5696ade SHA-256: 114185718f05a7ac857c9bfb96ded301d1277947e7f83c65a1af016aba4e8a5a
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, specifically flagged as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into downloading a payload or visiting a phishing site. The document body, though heavily obfuscated, suggests it is masquerading as an instruction manual.

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://midufefew.ru/strik?utm_term=mainstays+3+shelf+bathroom+space+saver+instruction+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455178/normal_5fe4314527911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470832/normal_5fd7d634bed8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408187/normal_606a9e0eb001b.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/fuwenoxuzasila/opencv_cmake_proxy.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/67354754220.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/network_monitoring_tools_freeware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1010197-1b95-44b0-a5af-59c948ba273a/what_qualifies_as_a_disability_in_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/seravam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c50bd82-1430-4a39-b587-47ca2beabc12/21798269114.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/71612754837.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/jitogoj.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/rizarelurival.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb954598-5701-421b-8ec5-8a17894c0e13/diablo_reaper_of_souls_ps4_gameplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88492528-2cf6-4a16-9f0b-6ae91d56402e/dovuvavatixuzaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8de67c8-3d96-423c-8703-cf8e6aa41f97/49430280913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7927cb31-4c8c-41eb-aac1-937d82525c89/31251817788.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/rotugutugetamaluranuji.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/house_of_night_book_series_reading_order.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_off0000e6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FD 5724 bytes
SHA-256: 27a5bd713a25ba9bb7012267a5f96c3b1e3f2d45fcdcfe4900c5f2149b5d4fde
font_01_sfnt_off0000fa65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA65 11136 bytes
SHA-256: eb79252957d4e762f3b57f8d464939fa6269280b4a18c63e4759d68ae72fea0e

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