Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7a15e9972d8b95…

MALICIOUS

PDF

81.1 KB Created: 2021-03-25 01:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 382e14e743da444db0823be80073f983 SHA-1: f53af57410837848c51797fca5f82fd0f761cddf SHA-256: 7a7a15e9972d8b9591525cb6193528855e9e3f25c37496f783764c9d08eaa1d8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, contains keywords related to a medical condition, likely used as a lure.

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://ponafet.ru/award?keyword=carcinoma+basocelular+superficial+pdf PDF link annotation
    • https://cdn.sqhk.co/dusimefosix/jiLkhbY/71693007126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485445/normal_6036f5443ca5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5fd0f0fb68c6f.pdfIn PDF document text
    • https://cdn.sqhk.co/govamopega/ibhijbu/49924169312.pdfIn PDF document text
    • http://tajafife.iblogger.org/79325168214.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zodamexuzawafi.epizy.com/word_analogy_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a037663-3754-4487-aa32-6ff9a94c6373/jakobesawezafidaligijabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88df91c-738e-45c6-b3a7-6a4a1c43d2a9/2016_form_1040_instructions_tax_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4557e35-9ceb-4072-8ddb-3d00e0cf4e13/why_is_lev_vygotsky_important.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6692a6e9-b34d-4a61-97ae-a136d4ab48d5/the_elusive_quest_for_growth_william_easterly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e00eae3-996e-4792-840a-1465ef6a0c09/what_is_the_best_radar_detector_on_the_market_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f567bc-d4aa-4613-9d4b-c5fc44d68a23/96836052670.pdfIn PDF document text
    • http://xotujulenibol.epizy.com/16230188141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0229c23c-7fbf-429b-a558-f7bc3d6fd049/nitusofef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5d9634-dc6d-4cb5-93f9-c4be7a0cef48/how_do_i_replace_a_watch_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/449b5a96-d669-4de0-b180-9f6e37ed4705/15013965290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e98db81c-1be4-4cfa-886f-defe5de4cd4f/43303044999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4385eb6d-88df-4114-b871-9c35e53712fd/sixumoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceca2057-9379-4ed3-8a3e-7976fc3f4ff7/pixibofalatemizebewekiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/339f23f3-f69b-40f6-8486-6ca61604b61b/how_to_rig_a_fishing_pole_for_saltwater_pier_fishing.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24A 5268 bytes
SHA-256: 0ccfe1d273ed6866ece10ab45057489177bd0ef6aa2f6f53e75c90779b4a9b6b
font_01_sfnt_off00010407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10407 10324 bytes
SHA-256: 49a50b09258d172c3d69bfc6ed190170b7d1cc7bd29053f4c7c3879eac690e5a
font_02_sfnt_off00012768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12768 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.