Malicious PDF — malware analysis report

Static analysis result for SHA-256 548e814192265c36…

MALICIOUS

PDF

78.0 KB Created: 2021-03-29 17:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065d823109708d33a0ed5c39f824e6a7 SHA-1: 905a6ad1f54ca650b2d8dbcb7c18dcd9cc813f7a SHA-256: 548e814192265c36f2332c138ebbe127f755743c0e5e02c954824ff12bce543f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness, consistent with a phishing attempt to redirect users to a potentially harmful website. No scripts were extracted, but the presence of the external URI is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=why+we+form+relationships+examples
    • https://cdn-cms.f-static.net/uploads/4494435/normal_60541f8dd9578.pdf
    • http://yeswins.space/hp_officejet_pro_8625_how_to_change_inkyqu8l.pdf
    • https://cdn-cms.f-static.net/uploads/4426682/normal_604353a549c1c.pdf
    • https://cdn-cms.f-static.net/uploads/4475852/normal_60548937a91a3.pdf
    • http://zejirejajedudu.getenjoyment.net/13293937222.pdf
    • https://cdn-cms.f-static.net/uploads/4450152/normal_60525fa874926.pdf
    • https://cdn-cms.f-static.net/uploads/4419193/normal_605d802eea706.pdf
    • https://cdn-cms.f-static.net/uploads/4407314/normal_601db63c1bbce.pdf
    • http://bodipok.getenjoyment.net/gosamiragadexe.pdf
    • http://reduslim-italia.website/what_is_chemosynthesisc2otc.pdf
    • http://pasendapp.online/glary_utilities_5_freedyci1.pdf
    • https://cdn-cms.f-static.net/uploads/4465255/normal_603348b8701dd.pdf
    • http://fuwiduwoxobol.mygamesonline.org/multi_banking_system_project_documentation.pdf
    • http://tokio-2020.fun/capitalization_and_punctuation_marks_worksheetsm6z9x.pdf
    • https://cdn-cms.f-static.net/uploads/4478670/normal_604510be1c210.pdf
    • http://fastgetme.online/what_is_emotional_labor_in_the_workplace4c4m9.pdf
    • http://persequenteamsohbet.com/stock_market_news_today_livee1pzf.pdf
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5fd7f427d5a7c.pdf
    • https://cdn-cms.f-static.net/uploads/4473903/normal_60107604017b1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rokabimokow.rf.gd/project_timeline_template_xls.pdf
    • http://zodofujeki.atwebpages.com/medical_billing_business_plan.pdf
    • http://sikirubuguje.epizy.com/business_english_book_answer_key.pdf
    • http://nopawalaxuwaw.onlinewebshop.net/somewhere_west_side_story.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_off0000f4be.bin
dfd648e4c87dfc44a8034404da074c089eda596fe81fa1904c41c9ab45c475bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BE 5416 bytes
font_01_sfnt_off00010724.bin
ccf5526dc727f75472e28159a1d1eb176be6542e7c2f6ee9e36c232e0d2dede6
pdf-font-stream PDF embedded font (sfnt) at offset 0x10724 10724 bytes