Malicious PDF — malware analysis report

Static analysis result for SHA-256 09aeeb0e01b820d6…

MALICIOUS

PDF

77.4 KB Created: 2021-03-21 00:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32dabec11dfe054219ea9228ffbe2de9 SHA-1: ced78ea90bba2298898ad0b70d9ac7fb5e45e671 SHA-256: 09aeeb0e01b820d672deb14f304fee347bd758c8803d4482ac9ce841a1f95f8c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to lure the user into a phishing or malware download site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing attack vector.

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://nipisod.ru/award?keyword=english+prefix+suffix+roots+pdf
    • https://cdn.sqhk.co/zuwojumabifa/ja4S9Ph/beginners_guide_to_running_with_asthma.pdf
    • https://cdn.sqhk.co/wokumima/jdCiiJb/f1_2019_racing_wheel_pc.pdf
    • https://cdn.sqhk.co/kobewudojuvo/iduGhja/38258194783.pdf
    • https://static.s123-cdn-static.com/uploads/4369640/normal_600455ffed361.pdf
    • https://static.s123-cdn-static.com/uploads/4403531/normal_5fdd1ca0c6550.pdf
    • https://cdn-cms.f-static.net/uploads/4421957/normal_602405bae51ae.pdf
    • http://gajonedorebuko.mywebcommunity.org/jaxudubajunaruzi.pdf
    • http://pofaduxiruk.getenjoyment.net/how_many_books_are_there_in_total_in_the_catholic_bible.pdf
    • https://cdn.sqhk.co/wanaxowuwot/ahjhcMt/mukesufojexorazo.pdf
    • https://cdn-cms.f-static.net/uploads/4412582/normal_602c1f92a3d0d.pdf
    • https://cdn.sqhk.co/fujikapoji/WeiChgE/download_game_snowboarding_the_fourth_phase_mod_apk.pdf
    • http://raxejudesezix.scienceontheweb.net/how_to_start_an_introduction_with_a_thesis_statement.pdf
    • http://fituxem.sportsontheweb.net/73629949118.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/56844b05-9abf-4ba0-b279-ebaa001e2df4/10981009485.pdf
    • https://uploads.strikinglycdn.com/files/5f8609dc-f96b-4da9-bd25-1764d004ca11/bosch_dishwasher_installation_brackets.pdf
    • https://s3.amazonaws.com/fuwenoxuzasila/how_much_does_a_restaurant_manager_earn_in_south_africa.pdf
    • http://lojibovel.myartsonline.com/sazumop.pdf
    • https://s3.amazonaws.com/fosalizuzu/11207747706.pdf
    • https://s3.amazonaws.com/pexodugosa/kifiwazip.pdf
    • https://uploads.strikinglycdn.com/files/8a321d60-8a8d-4083-860d-1bc65db244bc/mejeloke.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c8.bin
3a2b6d5f4ca89ad1c64c5c2769beb0250a73665b010f43278b004f0837a13bbf
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C8 5116 bytes
font_01_sfnt_off00010239.bin
ea4f6747abd9250ccf7b105d7b2c6f55a58b1b50fdf0d4114d5d31cbf0d15b25
pdf-font-stream PDF embedded font (sfnt) at offset 0x10239 11312 bytes