Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad50b05e3cc5cbb…

MALICIOUS

PDF

72.2 KB Created: 2021-02-15 13:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: c31deb77f779e250c3b2d437dce27545 SHA-1: df76dac5062e13c32daaf54c59a49aba3788cfd8 SHA-256: 4ad50b05e3cc5cbbea1005ee397eb2f4224a4d66877f01ce2607431fd512b414
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV detection and an ML classifier. It contains an embedded URL that points to a suspicious domain, likely intended for phishing or scamming purposes. The document body, though heavily obfuscated, contains text related to financial analysis, which serves as a lure. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest a phishing attack.

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://leonvi.ru/strik?utm_term=how+to+combine+fundamental+and+technical+analysis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387031/normal_601f11cb0718e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452398/normal_6029ae9d6a573.pdfIn PDF document text
    • http://indir-kazan.com/sogajunulevafesedanesajilgbpu.pdfIn PDF document text
    • http://clipshd.design/gb_whatsapp_apps_karna_haii2ho8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476783/normal_5fec79ec0fd4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486975/normal_6005f3c7691f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392457/normal_5fcb0f2fef1a0.pdfIn PDF document text
    • http://jetodubiropev.iblogger.org/anganwadi_form_in_delhi_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_60268ae9dc000.pdfIn PDF document text
    • http://tersq.space/88639446686qlt7s.pdfIn PDF document text
    • http://gakivako.iblogger.org/apd_incident_reporting_training.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xesijapapun.rf.gd/67766813142.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/army_ocp_uniform_regulations_socks.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/bareminerals_barepro_performance_wear_powder_foundation_ingredients.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/kawusis.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/lipid_metabolism_summary.pdfIn PDF document text
    • http://sodarag.epizy.com/86400753148.pdfIn PDF document text
    • http://dasanurarad.epizy.com/control_systems_engineering_notes.pdfIn PDF document text
    • http://josekew.epizy.com/ruguma.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_off0000dd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD95 5460 bytes
SHA-256: c64cfa3b6ebd3764f75f0fdde4d30d764518668577b2c2b3b5218afd2474a03b
font_01_sfnt_off0000f014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF014 10224 bytes
SHA-256: 7dd3039fa716c7b112e55841e8f67f21918b0c39b173a45b97c7748f27c7b3af

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