Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d667a7134762b6f…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 04:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0d706a00afd3b4085d554fdff3a2f95d SHA-1: 91935197dc470d906a07cfa4b7f1b7263db4980c SHA-256: 5d667a7134762b6ff23c3995bedc36bb093c603290e224539e6a8064a21e0d0e
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search query, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, appears to contain metadata related to its creation, further suggesting a malicious intent to disguise its true purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=what%20tv%20channel%20is%20christmas%20music%20on PDF link annotation
    • https://cdn.sqhk.co/definuseju/6hahdhc/86318344098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375507/normal_600351fd2fa51.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/ceXIFvA/48263259130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fd61dabd37bd.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/bumyV2r/tibers_box_2_lite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422390/normal_5ff0cc6355e4e.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/jTFidgl/linear_function_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/jiaiijb/abalone_shell_smudging_bowl.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/ahfhgnr/torn_rotator_cuff_blood_test.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/7DijBhj/getting_over_it_with_bennett_foddy_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_5fe7a115ddd11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_6003d333968c6.pdfIn PDF document text
    • http://pakavoposot.22web.org/kefiramidadu.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/nalifij/un_fact_finding_mission_myanmar_report.pdfIn PDF document text
    • http://wetexop.rf.gd/76754394126.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_off0000dc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC70 5112 bytes
SHA-256: 3b8aafe5981fbc6bba3dd2ab452d529c32a79d81b9c0987e02275ea7fc4c93ea
font_01_sfnt_off0000edb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 12368 bytes
SHA-256: 03a6c3160d333e2fc541689395ca31544f92c63525d9c30bf70ea8f10d912098