Malicious PDF — malware analysis report

Static analysis result for SHA-256 70aaf7f7a72b6a45…

MALICIOUS

PDF

67.8 KB Created: 2021-01-24 21:18:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b472ef454ebadf32bc2e24bb38e2cfde SHA-1: 033d26b3b804748ae8b0238011c0a7d5a1b8477b SHA-256: 70aaf7f7a72b6a4591ea40ba55a655be1003d36744fda04ba3da925be8ccddb6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into revealing sensitive information or downloading further malware. The document body, though heavily obfuscated, contains text related to investor phone numbers, aligning with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/wb?keyword=connected%20investors%20phone%20number PDF link annotation
    • https://cdn.sqhk.co/rosomugimo/5ugjgfc/the_hangover_2009_imdb.pdfIn PDF document text
    • https://cdn.sqhk.co/tujuvemevo/eigieDx/46972547378.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/yUgiiKc/pocket_option_broker_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/04geuia/96620166172.pdfIn PDF document text
    • http://mybatut.store/story_art_premium_apk_free_download56ckq.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/ihiivaI/best_video_chat_app_with_strangers_for_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/goa_online_portal_employment_certificate.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/composite_function_worksheet_answers_14-_21.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/bukidonerememi.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/32431676564.pdfIn 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_off0000cef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF3 5176 bytes
SHA-256: d0ffda15c170312703ab33a5e16ce6d2a8cacc00339c9da7e2ad370f84e33afb
font_01_sfnt_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 9980 bytes
SHA-256: 618e19ed3c3cefe3f05abdde0057e74949cd334ac5d03a6c853ab78a223198df

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