Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a87227bb27dc60…

MALICIOUS

PDF

81.3 KB Created: 2021-03-01 22:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34306644bad82d30ce99d20f2cb1633f SHA-1: e7d2e5b05e3f7d6dd69bcdb4556137b0eea05c58 SHA-256: 97a87227bb27dc60bcf728ac5100b285cfbcb4aa929abe9b8a82090cf998e53b
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, identified as malicious by multiple heuristics and a machine learning classifier. The URL points to a domain that is likely used for phishing or distributing further malware. The document body, though heavily obfuscated, suggests a lure related to a 'Roll20 5e character sheet tutorial'. No scripts were extracted from this sample, but the presence of external URIs and the ML classification strongly indicate malicious intent.

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://dugedepap.ru/strik?utm_term=roll20+5e+character+sheet+tutorial
    • https://gamepasak.weebly.com/uploads/1/3/4/1/134109087/a9159bc9c27.pdf
    • http://sowoxapexemex.sportsontheweb.net/la_declaracion_universal_de_los_derechos_humanos.pdf
    • http://lixorajepidil.mygamesonline.org/jepipejomu.pdf
    • https://cdn-cms.f-static.net/uploads/4417319/normal_603bd13c0b96d.pdf
    • https://cdn-cms.f-static.net/uploads/4493873/normal_600e058ab6467.pdf
    • http://rafupofamurawaf.mygamesonline.org/fluke_t5-600_manual_espaol.pdf
    • https://cdn-cms.f-static.net/uploads/4419645/normal_5fe7f58d96101.pdf
    • http://katipef.medianewsonline.com/zesimuvejekedoloz.pdf
    • http://javaxirivibewi.mygamesonline.org/wukigonenuw.pdf
    • http://junumidutuzakox.getenjoyment.net/symbols_of_the_12_apostles.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kulebosux.myartsonline.com/dream_interpretation_applause.pdf
    • http://rijemow.onlinewebshop.net/101_juice_recipes_joe_cross_barnes_and_noble.pdf
    • http://fabedidatifi.onlinewebshop.net/98674430428.pdf
    • http://maguvunu.epizy.com/literal_equations_word_problems.pdf
    • http://tukakuze.epizy.com/21187736731.pdf
    • http://gezewezelatemak.epizy.com/muguperewa.pdf
    • http://zevesijuduma.atwebpages.com/scid-5-cv_clinician_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d0.bin
b44c6a8dc2af45d51dc4a35f31711eba28e1c66822f38b553be9f278eb5e694e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D0 5068 bytes
font_01_sfnt_off00010316.bin
db3504f60456ed071a1737912c5e6f8d91b3acafd59229affb5fe84e72178560
pdf-font-stream PDF embedded font (sfnt) at offset 0x10316 11408 bytes
font_02_sfnt_off000129f3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x129F3 4324 bytes