Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baf3f7954de3f66…

MALICIOUS

PDF

69.0 KB Created: 2021-05-18 23:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27d1f79717a962f83c9d8c6863aca098 SHA-1: 27f7e77f5cde92647ad1820d71617edae8da1f8f SHA-256: 1baf3f7954de3f660541b85bc20cd02c04ae03552fa55a90486eb58160a848dd
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'what will happen if meteor hit earth', a common tactic to entice clicks.

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://huntic.ru/uplcv?utm_term=what+will+happen+if+meteor+hit+earth
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/1mcf9bdkaoecaaha9ueqo6np26/40762267285.pdf
    • http://bitite.lv/media/txt/122/file/pobapijuwu.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/741e7779cd847fcb5f890230094fe9e1/fuzepumapolu.pdf
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef3df1118c---weboba.pdf
    • http://agcslohian.com/userfiles/file/sejikeganisuraximotizin.pdf
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/9ef826b5224604689f6fbec44a87919c/minapigewajamodope.pdf
    • http://ankaser.com/userfiles/file/15064252078.pdf
    • http://apvn.info/userfiles/file/burugogebusipolivew.pdf
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a2af767f086---bazenaworanenoredebasada.pdf
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/c1f2ddbee6822a95d7b6ede25614bafb/lujutavofujuxagotitipim.pdf
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/5902e9fee09c2ecc3a09183d74cbf207/82767205501.pdf
    • http://odpadykj.cz/UserFiles/File/nolurax.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843806c1bb5---2347551441.pdf
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a7fc36711---85397511818.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/ac57a1abdd8162d854b33f89f95ceb45/kotidurowuju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000d2f1.bin
70d48e1edd2e4cb7ab2bb1b3166a6189eb6e25a95b8939dc59f48d73fb2928db
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F1 5068 bytes
font_01_sfnt_off0000e423.bin
d0edc96c568609b1dc2db1c9b768c50672de11083da8033d6092d571a591213d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE423 10204 bytes