Malicious PDF — malware analysis report

Static analysis result for SHA-256 005e1f37c88c74bd…

MALICIOUS

PDF

69.4 KB Created: 2021-05-01 06:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3464f29cd7d4ac7ec09ae5a0eebc790 SHA-1: 7a92f76b9675562958c7fe307615ba45c58a1059 SHA-256: 005e1f37c88c74bdcb54deadab60b90d52332b755b1530111b7cc3b652add2b4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs that lead to PDF files hosted on various domains, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, indicates a lure related to an 'Auto escola', likely to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9059b98a9---tasijebewomuvilagaba.pdf
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/vcoljpf8nfuvfvr81rpvicq88m/ketajijibe.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/191b4cf40a10b5ba5b4db110a586b4a3/24703862443.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160739e66d75aa---16857958690.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070332f4e1c0.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd005678b4---49473847987.pdf
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608910c0d31d7---vatapogafukawevikopatezit.pdf
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160826667cb33b---xinurakitogi.pdf
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607c551b8600d---46274316323.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/0830183990d18b63f31b1cf8ced551a5/muwajifuvebaj.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/e5d07487f0773057d0ade7d9a90c39b6/81489361619.pdf
    • http://africa-emergence2019.com/userfiles/file/xomopovotolujovuwowusur.pdf
    • http://ahdongjiu.com/upload_fck/file/2021-5-1/20210501070321602542.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/e3948bd2556130e5ee3df8b831f03137/37006600990.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/iq3lh2i83ntule0n3olhobev9s/tofanexadabisawugufoted.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=auto+escola+doni+formoso+do+araguaia
    • 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_off0000cf59.bin
fd759d7509ae820a9829a9cc87f65349ffaeabe53e8ccec12bea41556cf297d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF59 5328 bytes
font_01_sfnt_off0000e164.bin
bbbdfe47167326e4fc890f0f2a8d6e193d94b03fdb5e765fa5bce192fb623946		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE164 12076 bytes

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