Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ecb5ccf0e2389aa…

MALICIOUS

PDF

193.8 KB Created: 2021-04-05 04:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3527c41035b5f918e730b33c792f8049 SHA-1: d2a91f4a2661828862a41e74cb80bae5b77b807b SHA-256: 6ecb5ccf0e2389aa05144779b39988c1956b54bc834713fcd1aa59656348a47e
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 0.9995

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://resalured.ru/wix?keyword=upgrading+and+repairing+pcs+18th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/fabavukunatu/firha7N/bravelands_book_4_summary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_606617351897b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_602e2aa94069d.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/T1ibgif/61885037202.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/zuvovoxigumuz/60042019767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7023df-a756-47fc-864a-baf731818097/70155927825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6dc3a1-f30e-48d2-a7ef-800e59e4d741/craftsman_2800_pressure_washer_not_starting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49da8591-d5b5-48cb-b7e0-f4885396077a/whirlpool_wdt720padm2_diagnostic_mode.pdfIn PDF document text
    • http://fuvovidesom.epizy.com/soothing_baby_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/oecd_report_kazakhstan_education.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/fujifilm_finepix_s1500_battery.pdfIn PDF document text
    • http://zoxusanobidu.epizy.com/basejazumenaxadebopi.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/timeline_of_us_history_poster.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_off0002bd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD8E 5620 bytes
SHA-256: e614750e9bfcf5edfc8f9663c4041e1dc0fa2660daadc3af04d7216075d28d4b
font_01_sfnt_off0002d0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0B2 12048 bytes
SHA-256: cca2dac872423e44385e2fb3374d9a7b8b95e1a1d8ec95f6309b5b3224b68313