Malicious PDF — malware analysis report

Static analysis result for SHA-256 954eab15ba4a2ef1…

MALICIOUS

PDF

74.9 KB Created: 2021-06-19 10:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9db99b176abb30eef63f668eae26df1 SHA-1: 5ce1a193d3ca5c8916d1427d75257eeaa4f2dc5a SHA-256: 954eab15ba4a2ef13ac012b280f34310ebb3b5dac4cbe47f8c52597f1a11e656
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, characteristic of a link farm designed to attract traffic or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body text, though heavily obfuscated, suggests a lure related to 'movie download sites', aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zalajugimawif.weebly.com/uploads/1/3/0/7/130739284/b22f4c807.pdf
    • https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/zilakefimifepi.pdf
    • https://bisigibibozika.weebly.com/uploads/1/3/4/4/134438783/ea2b20fa1.pdf
    • https://mojipakubi.weebly.com/uploads/1/3/4/6/134679558/3145208.pdf
    • https://cdn-cms.f-static.net/uploads/4405929/normal_6013d845ce2fe.pdf
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/tewizajorab_revemekorixowok_mezofopexutu_peputopimuseg.pdf
    • https://cdn-cms.f-static.net/uploads/4382408/normal_5fd225df76562.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/sq/ugae/~3/J-SxIuB37Ms/square?utm_term=300mb+movie+download+sites
    • https://uploads.strikinglycdn.com/files/c0fbb121-9d72-46f0-a1a2-6cb6099f9ad5/how_to_level_lockpicking_wow_vanilla.pdf
    • http://mapaduzipi.pbworks.com/f/buxinuzuzuzij.pdf
    • https://uploads.strikinglycdn.com/files/f914c17e-4bc2-4f6c-989b-00f75636915e/nostradamus_prophecies_book_in_english_free_download.pdf
    • https://uploads.strikinglycdn.com/files/5296f767-ca47-4257-8978-17cecf9694d3/what_time_does_stock_market_open_central_time.pdf
    • http://wiwedano.pbworks.com/w/file/fetch/144423987/albert_camus_veba_zeti.pdf
    • https://uploads.strikinglycdn.com/files/46954781-ce9e-4746-b38e-e5bd6652083e/kebedesasizunitikavisomo.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60c3e9b4b649cd1c43d39164/1623452085125/20950032426.pdf
    • https://uploads.strikinglycdn.com/files/26c723a1-0da4-44e3-a34f-f1c2f844f91e/eye_doctors_that_make_house_calls_near_me.pdf
    • https://uploads.strikinglycdn.com/files/1fa9da28-53ee-415b-b68b-5d0326ef4d91/contrato_de_arrendamiento_minerva_descargar.pdf
    • https://uploads.strikinglycdn.com/files/816c33a6-504f-4cb9-aae2-92e06bd09309/19802132315.pdf
    • http://zuxanoguk.pbworks.com/f/nojufuso.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60c54afa5b087b02324f99bc/1623542525755/rizilos.pdf
    • https://uploads.strikinglycdn.com/files/fa57d017-4979-4163-9941-7cb02a1162d0/troy_bilt_tiller_tires_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/8911232b-f362-49ed-8390-12d1da05ba8d/how_to_barre_chords_easier.pdf
    • https://uploads.strikinglycdn.com/files/86c8f582-d96d-4aca-b439-764ead5d2f8f/stephen_king_the_mist_book.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_off0000e847.bin
500cc52407588cc86e454e3f8a8c95ea1192904e6b69696dd4f1d286a90038c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE847 5376 bytes
font_01_sfnt_off0000fa8f.bin
5a216a57e857fddeab6af5f6fe18630f728b0e02005beb0531af6349329a8815		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8F 10360 bytes

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