Malicious PDF — malware analysis report

Static analysis result for SHA-256 150b51b300d9967a…

MALICIOUS

PDF

102.5 KB Created: 2021-02-16 04:04:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 00710390f69bd22f9be4082f11dc0bf3 SHA-1: 8d8f782ad6c0fb7af3db7bf96397df0ef308845f SHA-256: 150b51b300d9967a21a15176d15a689bdeb86cf25ff44abbd38f54621e5e39f2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, with a high-severity heuristic indicating it's an MFA/one-time-code harvesting lure. The document contains multiple embedded URLs, one of which is `https://baarspo.ru/wix?keyword=qx9650+vs+q6600`, likely leading to a phishing page. The presence of embedded URLs and the MFA lure heuristic strongly suggest a credential phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://baarspo.ru/wix?keyword=qx9650+vs+q6600 PDF link annotation
    • https://cdn.sqhk.co/xejudawadoni/XRigAgc/pupugijalod.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hcu2XwI/nedegelagegirewalofexugi.pdfIn PDF document text
    • http://doxisodezezaku.iblogger.org/febijazakusopevajidi.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/f4YijYX/43074126861.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxefoxo/f3bhjhd/find_my_friends_iphone_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/dEQWvmH/74215809120.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506170/normal_5fcd712c7fccc.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/igigjaY/five_stars_customer_service_phone_number.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/lixisariwulo/28573904541.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/36410724938.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/tuwutad.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/92023628967.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/asvab_for_dummies_2018.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_off0001458f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1458F 5232 bytes
SHA-256: a53969dd1f13c1dc25d558845015c1a881c9184c1fe445e53cd46315d9fb3a25
font_01_sfnt_off00015787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15787 17304 bytes
SHA-256: eef87e653a47a5a2403454217ac449f93dbbb6dfda68daefcf0b4226503ac0b6

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