Malicious PDF — malware analysis report

Static analysis result for SHA-256 7204f32bea2d68f3…

MALICIOUS

PDF

77.0 KB Created: 2021-03-31 09:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f8b33bf50465e90cb09e6724812105 SHA-1: 026d299c3ed5210820c68785fc4c0402ec6404c9 SHA-256: 7204f32bea2d68f3cea6f9b200eae72f6785e9b1f86c8fde71a122bc45858c8d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'https://lozipotod.ru/123?utm_term=bouncy+castle+latest+jar', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure itself does not contain readable content, but the presence of external URIs and the high confidence malicious verdict suggest it's designed to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/123?utm_term=bouncy+castle+latest+jar
    • http://bestrongbyg.com/honda_rebel_500_for_sale_san_antonios3brg.pdf
    • http://koreanluxe.com/28851576740473qo.pdf
    • https://cdn.sqhk.co/wodabumamuv/jhjajbq/word_cabin_level_24.pdf
    • https://cdn.sqhk.co/gixobujikelu/wjch14l/diners_club_card_bmo.pdf
    • http://virona.org/downgrade_psp_6._60qbvpr.pdf
    • http://leafester.online/koteti7fw80.pdf
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5fd0a494667b0.pdf
    • http://kanshoper.site/redodesurojaxugurerrsc9.pdf
    • http://max-lifting.store/good_ted_talk_topics_for_studentscm1oy.pdf
    • https://cdn.sqhk.co/xuwadezab/D0sjiie/lozaxalarowapowosakas.pdf
    • https://cdn-cms.f-static.net/uploads/4427780/normal_6061e5a988c5f.pdf
    • http://ru-payment.casa/48080032833voe3h.pdf
    • http://copyright-help-center.com/eclipse_for_selenium_automationotcns.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3d51055a-234d-4eae-8645-02f307f96df2/2872690246.pdf
    • https://s3.amazonaws.com/xijalovelokolep/citizen_calibre_8700_gold.pdf
    • https://uploads.strikinglycdn.com/files/fed035c9-d824-4f4a-8a65-b97614684d35/a_gentle_introduction_to_ros.pdf
    • https://uploads.strikinglycdn.com/files/df9e9107-c484-4ec0-8909-d6ac2d0796e9/bible_commentary_matthew_15_21-28.pdf
    • https://s3.amazonaws.com/zomuzigo/xmanager_passive_free.pdf
    • https://uploads.strikinglycdn.com/files/d80f6378-bf68-45d8-b637-6aee7e71800a/how_to_learn_c_programming_at_home.pdf
    • https://uploads.strikinglycdn.com/files/50fa95b5-8bfa-4dab-97f7-b62862781478/71957762032.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e225.bin
a7930472a9cba49956ee3b3ab3c59e39f8eb8ec6397eadcfbceb7e4d3ad65da1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE225 4852 bytes
font_01_sfnt_off0000f2c3.bin
eec72240e1198faa9ccaad2febb1b075f3f4b102716f817aa4eaa97d6aacabdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C3 11004 bytes
font_02_sfnt_off00011867.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11867 4324 bytes

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