Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c9cb9a60edf9b4…

MALICIOUS

PDF

74.5 KB Created: 2021-04-03 14:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 594ea91f5b8d74c57777370a4db46bf1 SHA-1: 5c814d0871a16451d41a578d74b07aae3f50dac5 SHA-256: 52c9cb9a60edf9b4c6ba17d56f8b2067c1282f6ec7ee863274d0163e00688726
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'fokemale.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to Python programming to entice users to click the malicious link.

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://fokemale.ru/strik?utm_term=python+for+loop+break+not+working PDF link annotation
    • http://tronreserve.online/pifamasisukiwefekazagil56zwl.pdfIn PDF document text
    • http://ravasixojodari.mygamesonline.org/legod.pdfIn PDF document text
    • http://magnifioco.site/151609998720awdi.pdfIn PDF document text
    • http://ouily.xyz/38906389184nv915.pdfIn PDF document text
    • http://familyit.info/23671068479s1h8n.pdfIn PDF document text
    • http://hallhq.xyz/uc_browser_for_samsung_smart_tvm0ssx.pdfIn PDF document text
    • http://boevoenlp.com/acer_s231hl_monitor_specswmzut.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.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/bipepezuwed/giants_cardinals_injury_report.pdfIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/fosifaf.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/15575709662.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/funciones_trigonometricas_inversas_sin_calculadora.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/26744565763.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/7334629845.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/safoguzoxat.pdfIn PDF document text
    • http://tosipasakuvil.myartsonline.com/cctv_camera_installation_company_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/ford_explorer_maintenance_cost_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/47906157756.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/argumentative_essay_topics_for_grade_8.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_off0000e382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE382 5384 bytes
SHA-256: 57d60bae242d6794ae6478c1db91192b79a9b872716f855e830bbfb8d608a487
font_01_sfnt_off0000f5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E7 11312 bytes
SHA-256: ca67d2379948bf94c0bf352361ccad9824116c78e4c1fb49ff0ebf7a548ff3a9

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