Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f033136148c3218…

MALICIOUS

PDF

75.2 KB Created: 2021-03-16 07:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81c7a56c24b21b116ffc09eca9492c49 SHA-1: b3bb4b8b442beed4b26771457ecdbd8468eb14af SHA-256: 6f033136148c32185ca160a7b67564ec108d7f7eea986d803143b5e783b6db5e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by both ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'rocketfish banana plugs', likely intended to trick users into visiting the malicious URL for phishing or malware delivery. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=how+to+hook+up+rocketfish+banana+plugs
    • https://movobukibajub.weebly.com/uploads/1/3/4/5/134597216/3582756.pdf
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/worulitek.pdf
    • https://fipuwetula.weebly.com/uploads/1/3/3/9/133997959/5086180.pdf
    • https://lijuvimu.weebly.com/uploads/1/3/0/7/130775306/8387328.pdf
    • http://smirno.life/23816319773f2uau.pdf
    • http://nezikitif.iblogger.org/sbi_bank_clerk_exam_syllabus.pdf
    • http://trikolor.site/54545701211tqr70.pdf
    • https://tekaxudifen.weebly.com/uploads/1/3/5/9/135992886/8988473.pdf
    • http://fitokaps.xyz/9362338636bneyv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_69b7661c5eaa4133b7ed6c8a74b4e66a.pdf?index=true
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_86012b970be74c8788df4a9d749cd318.pdf?index=true
    • https://uploads.strikinglycdn.com/files/475415dc-cdc5-4618-bb06-f7244a162d3f/netwatch_operating_system_cyberpunk_2077.pdf
    • https://uploads.strikinglycdn.com/files/f24c022a-cffb-461a-8785-98ad8baee690/how_to_sign_in_to_teach_your_monster_to_read.pdf
    • http://rojapaj.epizy.com/angular_formbuilder_reset.pdf
    • http://xarinibobi.epizy.com/benzodiazepnicos_lista.pdf
    • http://wigugagekubog.rf.gd/50475835889.pdf
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_aba0a418997d4c4e96bee576b1f21f1d.pdf?index=true
    • 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_off0000e8ee.bin
b10a8d013c95bed25bcdb4d7e630ca3802f696e9f62972f6ce8df4893bc702f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EE 5536 bytes
font_01_sfnt_off0000fbcf.bin
2e94f43527462e411ed5e030ece473af479de5ab541ef2a47092649413f2fc1e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 10492 bytes