Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd04d2c43b77fc22…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 14:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c80bec5da8e60ddc173a6d13ec047f8f SHA-1: 596d700650f632ce6adb6c980aea90ff0b6070ac SHA-256: bd04d2c43b77fc22744a6dba9bb8e7eac3cc1f94bd113d2c6e94a876b470acf1
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://midufefew.ru/123?utm_term=briggs+and+stratton+20+hp+intek+carburetor+diagram PDF link annotation
    • http://mattelipsticks.site/9412515296niwz4.pdfIn PDF document text
    • https://cdn.sqhk.co/pojizurigos/hcQzvib/5_card_slingo_online_game_downloads.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/gjgpheL/85924266803.pdfIn PDF document text
    • https://cdn.sqhk.co/zimidenex/vDhcjb0/xuvizuniwi.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/jfhiieM/smash_mouth_covid_video.pdfIn PDF document text
    • http://milesnires.xyz/kawasaki_mule_2510_service_manualrqovp.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/yjbu0V9/hmrc_tax_calculator_self_assessment.pdfIn PDF document text
    • http://kizefet.iblogger.org/masiwaseliveletala.pdfIn PDF document text
    • http://pek-24.cc/easy_disney_piano_sheet_music41gk8.pdfIn PDF document text
    • http://soinjaga.ru/bgp_route_reflector_configuration_example_cisco5kjaj.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/wuwabobujasivor/nephrogenic_diabetes_insipidus_treatment.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_off0000dd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4F 5980 bytes
SHA-256: 2eb43bdd79d79e612b963ac33da2a02b00d214a6cd6d714366d0ef02b76c76e0
font_01_sfnt_off0000f17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17F 11164 bytes
SHA-256: 3b39dc7f1b4c26d8cb7ab9f129d35ac991a315a5c0c4ef9ce81875629aa60a75

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