Malicious PDF — malware analysis report

Static analysis result for SHA-256 2defcc85cdff5d8d…

MALICIOUS

PDF

73.2 KB Created: 2021-02-22 06:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d767bd4a09d799178b5baec3c02fdf50 SHA-1: c09b40114efa867d4a247027d4ed5a077e127649 SHA-256: 2defcc85cdff5d8d683656fd9615df3db5f80d531e99523681455f6e61d7e77f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/aws?utm_term=is+star+wars+knights+of+the+old+republic+2+multiplayer'. ML classification and ClamAV also flagged this file as malicious. While no scripts were explicitly extracted, the nature of the redirector link suggests the PDF's primary purpose is to lure users to a malicious site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/aws?utm_term=is+star+wars+knights+of+the+old+republic+2+multiplayer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_6022649a2fcb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469106/normal_5feff2751dbdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385848/normal_600dec537d684.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/happy_birthday_cake_images_download_hdw3q4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_602194fe8d9f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388613/normal_602cb01047fc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5fe70eb52d09f.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/dV44GnU/maxanidutudozukojalo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_6022d92c8e562.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389095/normal_5ff26542ad660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486765/normal_6032f9f164eac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408976/normal_6002c54c3caf8.pdfIn PDF document text
    • http://ens-pictures.ru/math_place_value_worksheets_3rd_grade9rd3x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368469/normal_60065c3edf761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/process_capability_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/tawopixunaxewoto.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/parrot_mini_drone_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/g_shock_rangeman_instruction_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB04 6036 bytes
SHA-256: bd0675e21ad7537aea137874a0b5b0c978e7003f9babc50abaf141f1ad419bfa
font_01_sfnt_off0000ef7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7D 11580 bytes
SHA-256: bc17b1055ca4c93bed66b625d75e7e145ec48f82a0e65002345411866fb8a4ab

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