Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13eecd11f13e906…

MALICIOUS

PDF

67.4 KB Created: 2021-02-28 20:16:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 194505c53dbda6d635bb9f4a3b15f3f4 SHA-1: c611a94c89999962e12f625a08dd6a2b7d35cdc0 SHA-256: e13eecd11f13e906b0b626b13fbb06e8dc35cf148893988feccc51a1e354658b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The presence of numerous external URIs, many hosted on disposable domains, suggests a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, contains keywords related to product imaging units and shipping, which are likely lures to encourage clicks on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/award?keyword=xpress+m2835dw+imaging+unit PDF link annotation
    • http://bandalet.club/730290785946nxdx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480174/normal_5fd1cd059f0e6.pdfIn PDF document text
    • http://ses-paypal.com/vopafuvejexofawutivesasapvwl7o.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/1e2e0be6e.pdfIn PDF document text
    • http://mon-fortuneo.best/how_much_does_it_cost_to_ship_200_lbsgizhj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_6027eeefb6201.pdfIn PDF document text
    • https://bagesasadav.weebly.com/uploads/1/3/4/3/134383367/xuwomufus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419832/normal_6012f8f0b7fb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386595/normal_5fe0bafd3d9dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_600100978fe57.pdfIn PDF document text
    • http://cherrypimp.online/elearning_storyboarding_tools9yecl.pdfIn PDF document text
    • http://pubggaming.online/android_auto_app_won_t_openy7wbv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369143/normal_5fcb030b5c8ba.pdfIn PDF document text
    • https://nasovakuj.weebly.com/uploads/1/3/2/3/132303133/d70f1e54b1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC841 5932 bytes
SHA-256: 488233155d99ac21f4f4841fc2777e965857e4055a8e6259513e0979237bf783
font_01_sfnt_off0000dc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC64 10716 bytes
SHA-256: 95664c6ec54a8450b7dac2564c7db0aefd4f1acd745cfe01690225b99f8248fa

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