Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe55502293aee59…

MALICIOUS

PDF

83.3 KB Created: 2021-03-28 12:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d3d5ff2325e8770cb4f57d6aa74c11f SHA-1: dce4124a55ebf50315b0ed1b49c600323e13b9c2 SHA-256: ffe55502293aee5916e30ae4967d4e6766e0835bbc35a07412718182d30f91de
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is malicious and a phishing attempt. It embeds external URIs pointing to suspicious domains, likely to host malicious content or phishing pages. The document body, though heavily obfuscated, appears to be a lure related to vacuum cleaner maintenance, which is a common tactic for phishing campaigns.

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://vilenefex.ru/strik?utm_term=how+to+clean+the+filters+on+a+dyson+v6+absolute
    • http://satumatajug.iblogger.org/coleman_evcon_furnace_manual_model_dgat056bdd.pdf
    • https://static.s123-cdn-static.com/uploads/4455178/normal_5fdff05c1d508.pdf
    • https://cdn.sqhk.co/kugorazig/gjygcI7/winterhawks_black_jersey.pdf
    • https://cdn-cms.f-static.net/uploads/4460045/normal_6024a87e83623.pdf
    • https://static.s123-cdn-static.com/uploads/4445877/normal_5fe05cd08ffae.pdf
    • https://cdn.sqhk.co/natefisaka/fgcviiJ/70698073768.pdf
    • http://roxifij.22web.org/gianvito_rossi_plexi_size_guide.pdf
    • https://cdn.sqhk.co/suxujaba/6J7ib3w/21394458131.pdf
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b3ec9cbc-d0fc-4297-8afe-f5ac835112d9/tavupileluro.pdf
    • https://uploads.strikinglycdn.com/files/728f0b69-507b-4070-aaca-6b9ddd623bcc/cisco_catalyst_2950g_24_ei.pdf
    • http://gedatedemokuju.epizy.com/bedediv.pdf
    • https://uploads.strikinglycdn.com/files/247ad785-8012-4409-b972-0de0b417c7d7/texas_drivers_license_cdl_book.pdf
    • http://jajoxutevo.epizy.com/performance_appraisal_comments.pdf
    • http://jopavufugas.epizy.com/que_es_la_afinidad_electronica.pdf
    • https://uploads.strikinglycdn.com/files/2d44f938-606b-454e-9205-04ce75153f72/what_are_the_different_styles_of_country_music.pdf
    • http://tawatibajat.rf.gd/makokesoposofipujemiz.pdf
    • https://uploads.strikinglycdn.com/files/a496045b-cd76-4fc8-8450-0cbd940e6550/16325726285.pdf
    • http://vurorevebosexu.rf.gd/aparato_digestivo_unam.pdf
    • http://jabukejezari.epizy.com/7358133657.pdf
    • https://uploads.strikinglycdn.com/files/ef2e3871-36dc-4c73-b89d-c59bffa7f317/how_much_does_a_gearbox_oil_change_cost.pdf
    • http://wuredavamawot.rf.gd/lokezerobepu.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_off00010699.bin
1ae5f6ad4306bb4c054cc909c86506badd9b73c4b3c3dd64068b4fd2f88778df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10699 5616 bytes
font_01_sfnt_off000119c5.bin
316eec743857ca714c2228303fc72d52d7f9d4d10afcc44dfbd3406f9b562c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119C5 11120 bytes

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