Malicious PDF — malware analysis report

Static analysis result for SHA-256 321503c8f41536b3…

MALICIOUS

PDF

61.5 KB Created: 2020-11-17 23:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 089e6da4aad9858ebca270c9ca8b2d28 SHA-1: 958526aec38be310df37922a030a3fa141a63beb SHA-256: 321503c8f41536b3e61c39c430aaf14ab7abe9e84b98b56e792e4dfd14bb6831
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffking.ru/strik?utm_term=ape+atoll+teleport+osrs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379614/normal_5fa77b1c23e48.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/pakokulukedis_lexagemesap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5f9c26905db55.pdfIn PDF document text
    • https://vuloribogisoso.weebly.com/uploads/1/3/4/6/134655424/c1af9a1cf8a7ce6.pdfIn PDF document text
    • https://kuduvoga.weebly.com/uploads/1/3/4/7/134745106/480282.pdfIn PDF document text
    • https://kuzasafeg.weebly.com/uploads/1/3/4/5/134586407/vifom_xemasip_turug_wubibixavofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d58587e-aaac-4bce-99d1-6a790c45cb77/rudiluvefubusujopagetof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef2f7c10-0017-4fac-9972-cab56f5e06b6/7269658402.pdfIn PDF document text
    • https://s3.amazonaws.com/timafatafej/bewifirol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe73c41-43bd-43d9-b892-9136c053f8f5/the_last_stand_zombie_game_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59ea6e16-a6a5-4bc2-b215-0fe2aee5d06d/height_of_ninja_coffee_bar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6e4169-4a01-4b56-a05d-31ba3be2f198/sinib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5131ea-35d2-42fa-983a-08205b9fe049/kafka_command_line_tools.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/surfboard_sb6141_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6f2638-41f9-4de9-afdb-af3426a0606f/merriam_webster_pronunciation_guide.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_off0000b444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB444 4800 bytes
SHA-256: 7b7f3f2f284ff2c4a4165ce3340fe3e78fe21d4c210f39c481b54e80d2f07e81
font_01_sfnt_off0000c4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A5 10784 bytes
SHA-256: af6b980aacf40116dd7d381208e5c7d3e6bb38e866bdf136ab61ef934467e51c

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