Malicious PDF — malware analysis report

Static analysis result for SHA-256 12293e12e49322e4…

MALICIOUS

PDF

74.3 KB Created: 2021-04-24 05:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: fc714c1b31a96b9c875f81a38de34aa7 SHA-1: 203894179c9aaf42ba69a0fb0d0ec68bd67e0a6d SHA-256: 12293e12e49322e43f8ec3baa6d271eb4f569954919c2d78833f55c6635e02f7
96 Risk Score

Malware Insights

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

The PDF 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, likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of embedded URIs and the ML/ClamAV detections strongly suggest a phishing or credential harvesting 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://fokemale.ru/strik?utm_term=read+json+javascript+example PDF link annotation
    • http://lasozenixirek.iblogger.org/fiske_guide_online.pdfIn PDF document text
    • http://tawesukosipot.22web.org/iptv_smarters_pro_apk_no_ads.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_cde93023f08e48faac6e5719c7a007ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eede6363-571d-4758-88f5-988a39f7fe96/how_to_put_wahl_pilot_clippers_back_together.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/dibaxuvuxezixufeg.pdfIn PDF document text
    • http://taxavotafeveb.epizy.com/meningococcal_acwy_vaccine.pdfIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_73f07464cde4449d9185ae49701ab05b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a93a2d5-852f-42df-b931-564f750f3ba6/49897434733.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/pekizasufinevoz.pdfIn PDF document text
    • http://xubudexev.epizy.com/59478638833.pdfIn PDF document text
    • http://figapow.epizy.com/webasto_heaters_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/agatha_christies_poirot_season_1_episode_5_cast.pdfIn PDF document text
    • http://talakukatutevib.epizy.com/all_network_protocols_port_number.pdfIn PDF document text
    • https://165abacb-5525-4e66-971c-c167d859e756.filesusr.com/ugd/f3f2a5_51663e109af54796872f31fa879992f8.pdf?index=trueIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_d4d62ba4a8eb432a88a26a88fbd0ae33.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/cvc_words_with_pictures_free.pdfIn PDF document text
    • https://f8b57e9d-e272-4783-b6f5-6420e6b93425.filesusr.com/ugd/886b73_d532c8043bba4ac982dd225137975350.pdf?index=trueIn 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_off0000e694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 5428 bytes
SHA-256: d3a963ff1b227e26c543e99b0ef8bae163df55fda885acd4ba4940e3995bf7c4
font_01_sfnt_off0000f90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90A 10320 bytes
SHA-256: 4511898e51319d14b3fb72f270501628a56c00691bad84fa5c4608f4d59b2c48

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