Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0fbec6c4f4b1a1…

MALICIOUS

PDF

88.7 KB Created: 2021-03-31 02:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2725afc4ea5f4b92b3ff8494875fa881 SHA-1: 5d9fc3732e0750ac69a11ba420a556049e6a24a0 SHA-256: 5d0fbec6c4f4b1a1ff0a5a3911d5cd8bf00fd5635c57cb54d384e92c5a7ed0e2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating the presence of external URIs and embedded URLs. The document body, though heavily obfuscated, contains references to 'calendar templates 2020 pdf' and the wkhtmltopdf application, suggesting a lure. The primary malicious URL identified is https://leonvi.ru/award?keyword=calendar+templates+2020+pdf, which is likely used to deliver a secondary payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/award?keyword=calendar+templates+2020+pdf
    • https://cdn-cms.f-static.net/uploads/4455390/normal_60315c40dee66.pdf
    • http://rixorevu.getenjoyment.net/sagewesoxemib.pdf
    • https://cdn-cms.f-static.net/uploads/4374359/normal_60243b3c66032.pdf
    • https://static.s123-cdn-static.com/uploads/4366014/normal_5ff69ab68c0e8.pdf
    • https://static.s123-cdn-static.com/uploads/4409420/normal_5ff635213a55a.pdf
    • https://cdn-cms.f-static.net/uploads/4486033/normal_605dbb15d6009.pdf
    • http://waferaboteb.mypressonline.com/fosipefoxideguwakiteloso.pdf
    • https://cdn-cms.f-static.net/uploads/4424645/normal_604420b950dcf.pdf
    • https://cdn-cms.f-static.net/uploads/4405459/normal_600df7056700f.pdf
    • http://vumonivaxozutod.mypressonline.com/83351421217.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/1612edbd-5fbc-4af7-8f42-4ab55cd8025b/how_long_did_democracy_last_in_greece.pdf
    • https://s3.amazonaws.com/wizakokowe/bopupafexiwetar.pdf
    • http://mekasesajiw.onlinewebshop.net/afterthoughts_on_visual_pleasure_and_narrative_cinema.pdf
    • https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_db83a38ea2104359bba4efb7fdd822f1.pdf?index=true
    • https://32cf4326-ba62-484c-a3ca-05d02c2dd2e5.filesusr.com/ugd/0b46e6_932f992cbb4e43ecb47cb4d25ab6bf9d.pdf?index=true
    • http://xunudijumo.myartsonline.com/ballet_class_music.pdf
    • https://uploads.strikinglycdn.com/files/544f572b-b601-4c9b-b561-6c78d7c14d89/the_penelopiad_chapter_9_summary.pdf
    • https://uploads.strikinglycdn.com/files/c1d2c42f-1c0a-4578-adee-b66e01ed87cc/flowers_for_algernon_book_common_sense_media.pdf
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_093601085ec94103967c5f9d9f248cb6.pdf?index=true
    • https://27dd58ca-3bab-4825-b0a2-cb75a9f796de.filesusr.com/ugd/aba4c5_cf967ee27b434839919a3d898b2fe274.pdf?index=true
    • https://s3.amazonaws.com/tomamujuf/how_much_is_the_ferrari_roma.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_off00010f58.bin
70377193b168131dd944c1165d94a64d4fc2091bf77ac614e55a4de1285e0598		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F58 5116 bytes
font_01_sfnt_off0001209e.bin
22991a54670c899fc57995f00e0df08ea8a0a3214ea6de32b6217c3c631e8305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1209E 11420 bytes
font_02_sfnt_off00014774.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14774 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.