Malicious PDF — malware analysis report

Static analysis result for SHA-256 5374694145852794…

MALICIOUS

PDF

80.2 KB Created: 2021-03-14 20:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478c9cf0277787cdda3b736d70d81732 SHA-1: 9a4e370976cbbc08ea95c6851a7ca6ae6ed0dbb2 SHA-256: 537469414585279443ee135e9379595d77a434067fcfdd5cedbe14af764bf3d0
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 phishing or trojan threat. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a malicious domain used to host further payloads or phishing content. The document body, though heavily obfuscated, suggests a lure related to a 'quadratic equation calculator graph', which is a common tactic to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/wix?keyword=quadratic+equation+calculator+graph
    • https://luvoseguz.weebly.com/uploads/1/3/4/6/134665560/nosojefi-sinanofozatu.pdf
    • https://cdn.sqhk.co/tipefima/ijiikja/2020_football_college_championship.pdf
    • https://cdn-cms.f-static.net/uploads/4409102/normal_5fe63a6a3a8b4.pdf
    • https://static.s123-cdn-static.com/uploads/4450249/normal_5ff93184ed851.pdf
    • https://static.s123-cdn-static.com/uploads/4417818/normal_5fcc2634dcc43.pdf
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/dikopavosa.pdf
    • https://gejodaxavusaw.weebly.com/uploads/1/3/4/7/134708791/tilowevomuw.pdf
    • http://gogemupiru.22web.org/servo_motor_mg996r_datasheet.pdf
    • https://gibejeki.weebly.com/uploads/1/3/1/4/131438187/butoza.pdf
    • https://cdn.sqhk.co/loberutebe/idQAu4p/aaron_rodgers_stats_today.pdf
    • https://cdn-cms.f-static.net/uploads/4464078/normal_6043ed1c94cc2.pdf
    • https://cdn-cms.f-static.net/uploads/4489848/normal_6036bf7481ea8.pdf
    • http://sadegobawuzufos.22web.org/22831078804.pdf
    • https://cdn.sqhk.co/raserijene/gcqShej/sonny_perdue_usda_news.pdf
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5fe6e8a76bb1e.pdf
    • https://cdn-cms.f-static.net/uploads/4464297/normal_603bf7b5ed924.pdf
    • https://nibotilujegaw.weebly.com/uploads/1/3/1/3/131381886/zegozobiriligal.pdf
    • https://cdn-cms.f-static.net/uploads/4402032/normal_602d7b384eca4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/eeb61749-e59c-4e11-ae21-5ea7132dcb54/rca_rt2781h_receiver.pdf
    • https://uploads.strikinglycdn.com/files/16bbe439-17d7-4b00-b3d8-ae85f33c2f0f/healthy_smoothie_recipes_with_spinach_and_fruit.pdf
    • https://uploads.strikinglycdn.com/files/94961daa-a377-45e4-8be2-01556c1bae7d/20134823189.pdf
    • http://bilunijo.epizy.com/85285962190.pdf
    • http://bupukulepunaz.rf.gd/68816452891.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_off0000fc33.bin
77a10b1ae437bbc74239ca8da66964393899e8b985d8e8e7defc75d7113e16c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC33 5344 bytes
font_01_sfnt_off00010e51.bin
3079f24f8b33196f592851059acf4b5aeb770748cca9ad8649da31d66f52b1c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E51 10812 bytes

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