Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab712e7d220d38a0…

MALICIOUS

PDF

67.7 KB Created: 2021-02-27 08:04:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7272b04a06d1a75eea4acdde0a522a69 SHA-1: 3cf2c3c32668ae6ff3f3fed74e66572b2fc1536c SHA-256: ab712e7d220d38a0f1333ddd15406327079511d393372f6bbea425e54f6aea1b
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 URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to income generation, aligning with phishing or malware distribution tactics. The presence of external URIs indicates an attempt to redirect the user to a potentially harmful site.

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://maypoin.ru/aws?utm_term=multiple+sources+of+income+bob+proctor PDF link annotation
    • http://bumaga.bz/winopimh57on.pdfIn PDF document text
    • http://legko.travel/tipos_de_comunicacion_en_una_empresamjp5r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5fd12c29d05fe.pdfIn PDF document text
    • http://erethiztzj.space/blumenthal_performing_arts_parkingu44t2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383566/normal_5fecc39715d8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403541/normal_5ffe899d9c42a.pdfIn PDF document text
    • http://strongcreditscore.info/71507046830fidgj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_602a061f521f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384304/normal_60311152d2af0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383806/normal_5ff881b67b6de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483586/normal_6002063b0c14c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453720/normal_60008435e854f.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/boduxatavepe/tevovevukekowizomujajediw.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/jeruxikokoxunewigoguboli.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/sankara_tv_app.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/free_powerpoint_templates_web_design.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/kudetepokubiweso.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/raw_chia_seed_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/xiwaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/2013_honda_pilot_reviews_consumer_reports.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_off0000cc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC21 5096 bytes
SHA-256: 8a9c2e154eaf894e6acc6927436adf1a828411671558dbf5bd5296d202939706
font_01_sfnt_off0000dd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6F 10504 bytes
SHA-256: 0d9858f171e725b5568810f153eddf856b90460373676b7ec952176bcd0ed58d

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