Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c230afacd743afc…

MALICIOUS

PDF

165.3 KB Created: 2021-04-06 20:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5f9ff6e295a0f40cacc92aa4beb5c07 SHA-1: 56af43e471122dcdb49467b281aa02e18d282541 SHA-256: 2c230afacd743afce89699ace531b8b76fb79fd5ba262a82b578961d0f7e5a60
136 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it with high confidence. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive. An external URI was also found pointing to a suspicious domain, which may be part of the lure or a download source.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://crophysi.ru/award?keyword=aurelio+mejia+mesa+libros+pdf
    • https://static.s123-cdn-static.com/uploads/4371788/normal_5ffae9f01c40c.pdf
    • http://jixusigelabewe.iblogger.org/pakurusokuzejegerax.pdf
    • https://zixojubagever.weebly.com/uploads/1/3/4/6/134613499/4269435.pdf
    • https://cdn-cms.f-static.net/uploads/4486548/normal_606ac0589cb75.pdf
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/pamenidetovimitexuma.pdf
    • https://cdn-cms.f-static.net/uploads/4460946/normal_6032934e522b8.pdf
    • https://static.s123-cdn-static.com/uploads/4427526/normal_6003dc2347a13.pdf
    • http://kameregeperiwaz.22web.org/pozakudezedurufedumiba.pdf
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/9278931.pdf
    • https://woseluwimi.weebly.com/uploads/1/3/4/1/134131525/a6f6649c421.pdf
    • https://cdn-cms.f-static.net/uploads/4471512/normal_6022bc61e2952.pdf
    • http://jorowijedo.mywebcommunity.org/92571868461.pdf
    • http://rebibedo.mywebcommunity.org/79382074053.pdf
    • http://linufiwanekume.scienceontheweb.net/bosquejos_biblicos_de_los_salmos.pdf
    • https://paduzegisenulun.weebly.com/uploads/1/3/4/6/134665595/d761921f97fad0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_bb8d69144e7447e09e94af130f50c22c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7b576455-06bb-4e7a-8b06-71662a261952/zoxokakori.pdf
    • https://ddb281da-11d2-423e-b83a-408ecf1f607f.filesusr.com/ugd/9db61c_51605cc1b53b4bbfbb1f71f4ada6ab73.pdf?index=true
    • http://zakoxaga.epizy.com/hamlet_act_1_scene_2_character_analysis.pdf
    • https://1a6c606f-1efd-495f-9370-57f425d809fd.filesusr.com/ugd/1be480_f0d456e4289740c0a88c508c988403f1.pdf?index=true
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_5da250c98b554d33a248db8d8553e669.pdf?index=true
    • http://pizitibasowu.atwebpages.com/wordly_wise_book_8_lesson_13.pdf
    • https://uploads.strikinglycdn.com/files/a651767c-5ff1-47aa-bde0-9d8d055ebd9d/59181906587.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_off00024a4a.bin
af52239a62d11c8aedea4ecbac65a1050eda2e1807dc15c83be29eaa8912a526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A4A 5392 bytes
font_01_sfnt_off00025c7c.bin
a213caced7c479ddc3cc55bd100fa00451dafc19db174833c36808b383382df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25C7C 12732 bytes

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