Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c1a47afff4888a…

MALICIOUS

PDF

66.2 KB Created: 2021-02-13 10:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 001d4bee8f06ec47153d6bc04cd5b097 SHA-1: 7f5adf1e546f86766876785215d6b9e31f8dfa05 SHA-256: 06c1a47afff4888ac809fddeaed38be73252ece225e25aa52a4e1b6e82dbbd7b
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 URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate maliciousness. The presence of an external URI and embedded URLs suggests a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

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/aws?utm_term=dictionary+worksheets+ks2 PDF link annotation
    • http://heliusdesign.ru/lycan_dota_2_guide_indonesiaqij6u.pdfIn PDF document text
    • http://loveworld.club/kulijelodib8hhmb.pdfIn PDF document text
    • http://wordwild-store.com/okay_boomer_girl_ageonep4.pdfIn PDF document text
    • http://zoomita.fun/777972242336sylw.pdfIn PDF document text
    • http://agentsoft.space/tubal_reversal_surgeryqkhnl.pdfIn PDF document text
    • http://buyfastedcircle.xyz/aisi_cold_formed_steel_design_manualanadz.pdfIn PDF document text
    • http://prodson.fun/classifying_matter_crossword_puzzle_answersb656b.pdfIn PDF document text
    • http://avtoshtorki.shop/colloquium_report_for_mca240kg.pdfIn PDF document text
    • http://omerkatanalp.com/galaxy_alien_shooter_mod_apk_latest_versionbr7qb.pdfIn PDF document text
    • http://reduslim-ufficiale.website/chirutha_movie_songs_lyricsmr7si.pdfIn PDF document text
    • http://small-italy.space/doodle_god_blitz_apkretm2.pdfIn PDF document text
    • http://excellent-spb.ru/86905064537jw2ur.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/lonozote/baal_veer_episode_1084.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/organizational_behavior_case_study_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/mandy_the_haunted_doll_movie_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/70158358620.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/chrome_windows_7_64_bit_standalone.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_off0000c616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC616 5244 bytes
SHA-256: 4dadfd5f44f832fda6207267cae68696e78514926002db4eae6e9c21de37c12d
font_01_sfnt_off0000d80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80A 10456 bytes
SHA-256: f7e1d30a671c45ed0891806bfb0772912495465122f29c956cbaa446726f9db7

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