Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4af049aac795362…

MALICIOUS

PDF

81.4 KB Created: 2021-03-30 20:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75fbdd98f3fa6f01642cfeb8d3c8fe8c SHA-1: 406de9c301d022fed62c0820f91db220a13e1708 SHA-256: d4af049aac795362e8a3c57ddec5d1ce5a4d793bea2121b6cdf0c9f093f9f9be
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'scientific experiment report template', aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=scientific+experiment+report+template
    • https://cdn.sqhk.co/tefazaturar/egggjgt/police_drift_car_driving_simulator_mod_apk_download.pdf
    • http://damvglaz6.xyz/37882387383al4pt.pdf
    • http://islemleriniz.org/sepixatobolusufpdo1d.pdf
    • http://boomerangoo.site/what_does_binomial_theorem_mean_in_mathjpoce.pdf
    • http://allieshouseofhope.com/gafapixogevusapukegimenemj3.pdf
    • http://mesretly.xyz/rikuwevikoxefolazotyzlod.pdf
    • https://cdn.sqhk.co/kozutani/zhjgdii/4739732038.pdf
    • http://bumefivaloso.scienceontheweb.net/air_force_x_group_previous_paper_download.pdf
    • https://cdn.sqhk.co/jabuvilir/gB4L75T/road_scholar_trip_18783.pdf
    • https://cdn.sqhk.co/kaxonavi/jbijgeV/82650870513.pdf
    • https://cdn.sqhk.co/kavejufa/N5eicji/61990244169.pdf
    • http://alkostore.xyz/264457144715k4iz.pdf
    • https://cdn.sqhk.co/gutinisiv/chj5igx/761913618.pdf
    • https://cdn.sqhk.co/jiwosowo/a3jeifp/fefawojokapuruxugozadujos.pdf
    • http://vezdesami.ru/1744245205461s93.pdf
    • http://zakewabo.scienceontheweb.net/32581294876.pdf
    • https://cdn.sqhk.co/pojuzijix/TM0hcjb/red_alert_2_mods_install.pdf
    • https://cdn.sqhk.co/rufopunuk/g1iiShe/63229933066.pdf
    • http://trickyturkey.com/lucent_ecology_and_environment_book_in_hindipkbvr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ba19268f-3bde-46fe-9e82-96dcba49b82c/how_to_find_maclaurin_series_expansion.pdf
    • https://uploads.strikinglycdn.com/files/b2b61717-905c-4fb5-8379-ada8a9dfe772/the_how_of_happiness_drive.pdf
    • https://uploads.strikinglycdn.com/files/f80e1d9e-8c4c-41c1-8721-6e09f02b4135/pathfinder_kingdom_building_sheet.pdf
    • https://uploads.strikinglycdn.com/files/886f7fae-c235-4bde-ab01-efef71079054/jcpenney_sewing_machine_model_7050_parts.pdf
    • https://uploads.strikinglycdn.com/files/a9f2fe4f-86e3-4c40-82df-d7e055d5176e/tiduxumalewip.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_off00010350.bin
69656391b5d62d0fd4e9d5cda1518b29030dea604db9a91d7e0750b17e7c6737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10350 5156 bytes
font_01_sfnt_off000114d0.bin
52da427592045510d0a56740dbe321045385fd7a4c17c4ef6137695c82e8bac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114D0 10276 bytes

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