Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc16102c4421f6a…

MALICIOUS

PDF

79.9 KB Created: 2021-04-03 21:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2de10d1d009dd146b8c74b3f8d9185ee SHA-1: 6def0c8eb9214e230e7f425b9173d85da910e5cf SHA-256: dcc16102c4421f6ad14e307f0d823d9724e11db99203b3afe4eff9085a5bf5e5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that is disguised as information about VMware datastore cluster best practices, likely to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of embedded URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=vmware+datastore+cluster+best+practices
    • http://busotokebos.iblogger.org/yahoo_data_python.pdf
    • http://fowujuli.iblogger.org/vedabezavukejepubuz.pdf
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/1927329.pdf
    • https://gezedasi.weebly.com/uploads/1/3/1/3/131378850/fapiwobumumusasop.pdf
    • http://tasonilevibinu.22web.org/how_do_you_use_a_hoover_floormate_hard_floor_cleaner.pdf
    • https://cdn-cms.f-static.net/uploads/4413563/normal_602904f20e974.pdf
    • http://zejizeb.22web.org/rovirodadidaro.pdf
    • https://static.s123-cdn-static.com/uploads/4415334/normal_5fdfb1c581511.pdf
    • https://cdn-cms.f-static.net/uploads/4380393/normal_6038bf90dfd62.pdf
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5fd80740bf61e.pdf
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fed800ca5462.pdf
    • https://vuzazaba.weebly.com/uploads/1/3/0/8/130813658/349860.pdf
    • http://lajopufifaji.22web.org/76378842959.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xaduvegovoz.rf.gd/sazukikilumiraked.pdf
    • http://sabepusejoponi.epizy.com/21275998970.pdf
    • https://uploads.strikinglycdn.com/files/43956cf8-9ff0-4c70-a6c7-f95c1e38b325/wuxug.pdf
    • http://zajukefed.epizy.com/science_clothes_worksheet_for_grade_4.pdf
    • http://gedonoseg.epizy.com/98872277011.pdf
    • http://banigigafizaje.epizy.com/basic_life_support_guidelines_2018.pdf
    • http://fegozovot.rf.gd/distance_and_displacement_worksheet_answers_key.pdf
    • https://uploads.strikinglycdn.com/files/d72a5355-2aba-4957-a12b-1a7086212fae/xalagevawekubixakuwi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e50e.bin
cf0db694f3f35e26af7fd676b7500c88b4677f028ea5e1253feae67837f4ef38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE50E 5192 bytes
font_01_sfnt_off0000f6b5.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 1800 bytes
font_02_sfnt_off0000ff43.bin
9bc86b498c1deaf4558f2c4d68b201250691f366781f7a029ae297e0a9657f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF43 10752 bytes
font_03_sfnt_off000123c8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123C8 4324 bytes

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