Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e646a02fda26ecb…

MALICIOUS

PDF

72.5 KB Created: 2021-04-01 18:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 75fa32b8cdc7a5016b953d5aaa1307b6 SHA-1: 49df4ef68cf24595110dcf75b021e6a88fa7a7e6 SHA-256: 5e646a02fda26ecb08b2e84b8f5cdb5e021993e856f61690b22bda56d1d1679b
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, and the ClamAV detection indicates it's a phishing trojan. The embedded URL is likely intended to redirect the user to a malicious site for credential harvesting or further malware delivery. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly suggest a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=ccna+security+lab+manual+pdf PDF link annotation
    • http://mukinokelek.mygamesonline.org/concepto_de_autoestima_segun_autores.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/fowuguwejop.pdfIn PDF document text
    • http://pravagims.net/gseb_12_science_biology_bookezdqt.pdfIn PDF document text
    • http://wigutanibip.iblogger.org/zokapabilatuxofupeli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471691/normal_6062e007360ad.pdfIn PDF document text
    • http://farvestnn.ru/lorokixofnwzh5.pdfIn PDF document text
    • http://majovevalaji.sportsontheweb.net/6480573336.pdfIn PDF document text
    • http://topchambre.xyz/libro_mi_padre_de_juan_pablo_escobarxpeco.pdfIn PDF document text
    • http://expressday.online/81252855826vwcvn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_6047e4234fb13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389599/normal_6017988f6d2c0.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/bosetizetobomam.pdfIn PDF document text
    • http://pepirizibizedel.22web.org/carpenter_performing_arts_center_seating_chart.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://livofos.epizy.com/what_does_222_mean_in_islam.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/notatezezaxotezogapapix.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/68891982022.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/61462108135.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/how_much_is_a_walk_in_humidor.pdfIn PDF document text
    • http://mosokiwilag.rf.gd/detipunod.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/23618046687.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/59203387334.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/raymond_electric_pallet_jack_wheel_replacement.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_off0000dd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD79 5448 bytes
SHA-256: 400cc5fb5ed6bb3c1f2086ebe994a9eb621af70953142a5557747e6dcc8109aa
font_01_sfnt_off0000efea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEA 10276 bytes
SHA-256: 845940fb8c6481ee81e9360cd04aa9c1ccfea72a10fb80e16d25a24bbc28372d

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