Malicious PDF — malware analysis report

Static analysis result for SHA-256 580e47317f4f5b22…

MALICIOUS

PDF

68.8 KB Created: 2021-02-19 01:04:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65327c889ebd85475755d6df52b1cb49 SHA-1: 16f5f16c0fc571c9aae525db6f1706f93e635ef1 SHA-256: 580e47317f4f5b2287d15266697471016cd3871e024564736295765461c21a78
164 Risk Score

Malware Insights

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

This PDF was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting a link farm designed to redirect users to potentially malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/strik?utm_term=what+are+the+policy+models
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/7354567.pdf
    • http://copyrightsupport-ig.com/chomsky_normal_form_converter19sxo.pdf
    • https://cdn-cms.f-static.net/uploads/4452834/normal_60149408b44c6.pdf
    • http://espaceabonnes.com/kusarewamokltl.pdf
    • https://wejafivikime.weebly.com/uploads/1/3/0/9/130969279/8850911.pdf
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/2721271.pdf
    • https://cdn.sqhk.co/xoguvamev/UlFfnjf/felekanejubupo.pdf
    • https://cdn-cms.f-static.net/uploads/4366947/normal_6022b15e1e651.pdf
    • https://fikazimibugexu.weebly.com/uploads/1/3/4/5/134515259/tekuzunugid.pdf
    • https://static.s123-cdn-static.com/uploads/4426063/normal_5fec49df5cc5c.pdf
    • http://gratoramaa.website/canadian_citizen_application_formppx8u.pdf
    • https://mebifexet.weebly.com/uploads/1/3/1/3/131381374/livefizukiru.pdf
    • https://sefovajeve.weebly.com/uploads/1/3/0/7/130775607/6824123.pdf
    • http://zathkatow.xyz/wfg_financial_needs_analysisn5w5f.pdf
    • https://cdn-cms.f-static.net/uploads/4418764/normal_6018abb2e607e.pdf
    • https://cdn.sqhk.co/kusewupudin/Gvenrje/pejukijupegorexivonoxatov.pdf
    • https://static.s123-cdn-static.com/uploads/4369318/normal_5fc953a1310e9.pdf
    • https://cdn.sqhk.co/ridefapagol/1ighhwZ/resixijasafivol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000d0f1.bin
de2e2a582f942da889a2d474a66d3e879d863d1c8d503396e309a5c3749e7385		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F1 5428 bytes
font_01_sfnt_off0000e34b.bin
bb41249f188b37c195de1a1db681ee58676452d5535ce31063c0047a2b007c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 10200 bytes

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