Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dd071be55ffded…

MALICIOUS

PDF

70.3 KB Created: 2021-03-22 23:46:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c34dbdcd7ee32672215fedf4308feb0 SHA-1: d98a300f2f8a41e63b2fcad55b44c4d4360d82e8 SHA-256: c2dd071be55ffded79f8b40fa523cc6c211a5bd28f62b2f2b40662d1d7f65da6
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, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious 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://xajibur.ru/strik?utm_term=big+green+egg+charcoal+starter
    • http://vuvodagedene.scienceontheweb.net/wekil.pdf
    • https://bajomunimiru.weebly.com/uploads/1/3/1/0/131070213/c9a2721b645f7.pdf
    • http://negozio50sconto.info/povosusumudanuwag9s2r8.pdf
    • http://zegigujeluk.iblogger.org/life_of_fred_apples_age.pdf
    • http://gekenig.mywebcommunity.org/stand_to_military_term.pdf
    • http://guferesuzas.22web.org/education_portal_e_kyc_report.pdf
    • http://devlp.design/vivamitisabavov4snhl.pdf
    • https://melitefikexaj.weebly.com/uploads/1/3/4/3/134315726/9385549.pdf
    • http://repair-kvadrokopterov.ru/saresabitafarikekovesp6wpz.pdf
    • http://tonufunevozapiv.iblogger.org/pdf_file_text_editor_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mekonulegipero/belt_size_guide_womens_cm.pdf
    • https://s3.amazonaws.com/luborinizu/entry_level_software_testing_jobs_in_singapore.pdf
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_1954a4ec9bf84f19886e52a7e196d78f.pdf?index=true
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_1e9182a388754e7d8107900903732ba0.pdf?index=true
    • http://fazaburifug.myartsonline.com/jitixuxumixakosazi.pdf
    • https://s3.amazonaws.com/piwupevivotixi/96843186375.pdf
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_74e917d1ed8d4cfc888a1e57dcd55516.pdf?index=true
    • https://s3.amazonaws.com/zodawanuror/jaguzugesevitofijosazusu.pdf
    • http://jasuwoxitagani.rf.gd/what_was_the_first_piece_of_labour_relations_legislation.pdf
    • http://zixugawemi.rf.gd/15606202099.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_off0000d1d1.bin
5e55094ae2510c1cebe64e75c768046340286d8d78c268614d73eff43c2330f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D1 5108 bytes
font_01_sfnt_off0000e332.bin
148e8e47391cc667fc2ed7ab9ed5467d09f8fb948826123c1b58643c2d61995b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE332 11544 bytes