Malicious PDF — malware analysis report

Static analysis result for SHA-256 62041a51053f2059…

MALICIOUS

PDF

83.3 KB Created: 2021-05-10 02:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2b87108ebdf1ce32587516d5b62c037 SHA-1: 29477d998b7d21ce602b5df04d47cdc3f55cae78 SHA-256: 62041a51053f20593b3ebc9d1642ecd86f0f02e03736715551b8d5d33e12bc3e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to 'google cardboard apple', aligning with the detected phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=google+cardboard+apple
    • http://keruluzo.medianewsonline.com/alvin_toffler_carti.pdf
    • http://sesopuligu.iblogger.org/bestiario_tradicional_portugues.pdf
    • https://mafobosapufi.weebly.com/uploads/1/3/4/5/134505980/1120336.pdf
    • https://cdn.sqhk.co/zuvutose/P7zdbjf/76904176644.pdf
    • http://vobafoselalulor.mypressonline.com/17102202598.pdf
    • https://sapesikunudob.weebly.com/uploads/1/3/1/3/131398489/5feb94d197.pdf
    • http://bujenaro.scienceontheweb.net/42433650046.pdf
    • http://fumexijana.getenjoyment.net/74773214020.pdf
    • http://lagulesuko.medianewsonline.com/15871483397.pdf
    • https://cdn.sqhk.co/jebavimot/WibXjg4/vip_healthcare_staffing_agency.pdf
    • https://cdn.sqhk.co/tikugubobo/xigJggT/heavenly_sword_dragon_slaying_saber_cantonese.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/54dd3085-8d7e-48a6-8795-de1b03db7178/krups_beer_best_price.pdf
    • http://zavufomagug.rf.gd/black_tie_formal_attire_meaning.pdf
    • http://xadeboni.epizy.com/sulemamutugopeje.pdf
    • http://sipisadam.rf.gd/febejofuzulepinuk.pdf
    • https://uploads.strikinglycdn.com/files/d91a636e-3b9b-4e67-a72c-ce2de2b98ed9/shark_navigator_vacuum_tools.pdf
    • https://uploads.strikinglycdn.com/files/eafdc388-7466-47eb-b1bd-f963da1c5984/i_pilot_remote_battery_life.pdf
    • http://fubegamo.epizy.com/8517060566.pdf
    • https://uploads.strikinglycdn.com/files/54fd6a1a-6c30-4815-93ce-2024ea6bb23e/voguderinedawusisuluwaku.pdf
    • http://zadiken.rf.gd/mountain_bike_size_guide_wheels.pdf
    • http://tividisexagit.epizy.com/sarelodazixogerejazi.pdf
    • https://uploads.strikinglycdn.com/files/0782b243-80c3-4132-b2f5-9814518fd329/valedivisupujajexo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fab7.bin
1b4de462e4e0702cb6ee573806e6d32eb93cd1a84ed11b48ac6e5e6d428b7d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB7 4788 bytes
font_01_sfnt_off00010b08.bin
17b05ccf44bbc1ab0c404c2e4cf65c590a9f74f66fdadd7344e1169bb50ca0e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B08 10976 bytes
font_02_sfnt_off00013095.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13095 4324 bytes

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