Malicious PDF — malware analysis report

Static analysis result for SHA-256 731874e96a65e465…

MALICIOUS

PDF

62.8 KB Created: 2020-11-24 19:43:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8aa799fbb26ee1c242a7d7f3749d140 SHA-1: 46c26f7130a76343e4f5a5b25bc6df8b5e24cb5b SHA-256: 731874e96a65e465e65255e28bb807f360f35a65f0b87b609a7fbe7b701ab62b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Binding of isaac technology .5'.

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://trafffe.ru/strik?utm_term=binding+of+isaac+technology+.5
    • https://subulutug.weebly.com/uploads/1/3/4/3/134349811/d9b2dafdc9.pdf
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/kizerapu.pdf
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5f9236ef18bc1.pdf
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5fadc8efe09f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jixerubowi/guvusalik.pdf
    • https://s3.amazonaws.com/xenavuxa/boundaries_in_dating_making_dating_work.pdf
    • https://s3.amazonaws.com/befarekogol/kafibufijepoluwugaza.pdf
    • https://uploads.strikinglycdn.com/files/e08b9b61-3eea-4a6d-be91-d639bd0cd1ef/poema_de_enamorados.pdf
    • https://s3.amazonaws.com/rimejiguvif/sql_server_management_studio_express.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/tv_movie_a_howling_in_the_woods.pdf
    • https://s3.amazonaws.com/vapite/revit_ceiling_view_range_explained.pdf
    • https://s3.amazonaws.com/sasufufa/firenewt_d_d.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_off0000aa88.bin
c13993e919d63cc307fab165a05ba71043b300f61ddcceedae3e5d730a2ccd04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA88 5280 bytes
font_01_sfnt_off0000bc89.bin
df96b22dc1f953df6c346d27c4d211b9518980091f5787f534a8adb5dc832ffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC89 10152 bytes
font_02_sfnt_off0000df1a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1A 4324 bytes

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