Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c0a05d115a9c339…

MALICIOUS

PDF

76.5 KB Created: 2021-03-05 15:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51f0ae8e1864814e0b7043e1b7c58467 SHA-1: 29cea03acdbf790403b91d2474765eb135a30b81 SHA-256: 5c0a05d115a9c339267cf338f2598cde162a2b0271eb30ed3e7cb0ec38820491
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. The document body, though heavily obfuscated, contains text related to 'used john deere tractors for sale ontario', suggesting a lure. The primary IOC is an external URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=used+john+deere+tractors+for+sale+ontario
    • https://silorofolukut.weebly.com/uploads/1/3/4/2/134265947/2c1a81faa0ef.pdf
    • http://dreabling.online/18930776300wfy1r.pdf
    • https://depumubawaminuk.weebly.com/uploads/1/3/4/2/134236244/wefuxepetami.pdf
    • http://car-test.pro/25385645483fsl0m.pdf
    • http://dazenad.iblogger.org/sokovefizepovanesogare.pdf
    • http://ctyr.ru/disney_princess_costume_bundlebudhx.pdf
    • http://keysecret.ru/logb_personality_test_online3rbe6.pdf
    • https://dugixezixek.weebly.com/uploads/1/3/4/3/134344389/bevatiteliwibivuzor.pdf
    • https://ranaxeli.weebly.com/uploads/1/3/4/4/134478161/8a7bf.pdf
    • https://xiwogape.weebly.com/uploads/1/3/0/9/130969270/1944818.pdf
    • https://zozolesib.weebly.com/uploads/1/3/4/6/134631165/tapujamo.pdf
    • http://lizanuj.22web.org/tovuno.pdf
    • http://grigolia-studio.ru/la_ruta_hacia_el_dorado_psx_espaolgirus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9f01b06e-63c5-45df-8d52-988bcb9fb018/how_to_get_jvc_camcorder_out_of_safeguard_mode.pdf
    • http://tixuveji.epizy.com/canarsie_high_school_for_medical_professions_uniform.pdf
    • http://jikusipuxojapu.epizy.com/s_tecappvault_2015_caesium_image_compressor_free.pdf
    • http://vulomalizekuvu.rf.gd/funny_groom_wedding_speech_template.pdf
    • https://uploads.strikinglycdn.com/files/72aa89e7-818c-425e-97fe-0b09df5a5f8e/fantastic_beasts_and_where_to_find_them_2_movie_review.pdf
    • http://poxemibusap.epizy.com/98007221440.pdf
    • http://timodetunidup.epizy.com/zobapako.pdf
    • http://zovopabipani.rf.gd/jadawegojezuso.pdf
    • http://soroxafuvi.epizy.com/23595305823.pdf
    • https://uploads.strikinglycdn.com/files/8b3a1462-4721-4527-9a28-bb35146a26c0/how_to_train_to_get_ready_for_the_marines.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_off0000ed35.bin
ae076d6833ff13d485d81552d0ca1c5ca53f64c78693e19e969604fcb147363b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED35 5176 bytes
font_01_sfnt_off0000fed2.bin
055f837cab7367a608b237e7fb958ee9dcc5ad221a6d0773d5a933e26a1513fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED2 11108 bytes

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