Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba1446a2d463c11…

MALICIOUS

PDF

78.0 KB Created: 2021-03-14 04:04:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fa1dd156be3205312770517e5857bfe SHA-1: b686f7073d436fc1d30397cf76c7ae9d72f249b6 SHA-256: fba1446a2d463c11b93012ad8d1891d9f2754eb11cdf1002658c2747d6768d36
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a site that appears to be part of a link farm designed to attract search engine traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=january+2020+calendar+template+microsoft+word
    • http://mamimufexaliro.66ghz.com/cutting_edge_advanced_tests_with_answer_key.pdf
    • https://sajolunuweto.weebly.com/uploads/1/3/1/4/131407571/98fb7d1033fe1.pdf
    • https://cdn.sqhk.co/wuwexosul/LhdgL8s/military_occupation_definition_history.pdf
    • https://bituxomixa.weebly.com/uploads/1/3/4/1/134131270/334defb516dd66e.pdf
    • http://zeraseb.66ghz.com/cg_police_si_syllabus.pdf
    • http://es50off.pro/femom4yycc.pdf
    • https://cdn.sqhk.co/dubutemaruxu/ijPzouO/black_operations_2_mod_apk_1._0._0.pdf
    • http://creditstar-kabinet.com/27417080218gnf7q.pdf
    • http://lunowizu.iblogger.org/dexijoxamirasil.pdf
    • https://sefagovat.weebly.com/uploads/1/3/4/4/134402874/03363280.pdf
    • https://cdn.sqhk.co/duxadikoti/s3jfwge/29010331875.pdf
    • http://wuvufitomisag.22web.org/semuzixi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fdddb8fd-bdcc-4f42-abed-36f45bba65e7/where_was_the_last_of_the_mohicans_1992_filmed.pdf
    • http://xigavekokerir.epizy.com/92014276166.pdf
    • https://uploads.strikinglycdn.com/files/476ffe33-626c-4c35-9ae7-be6b6b409a47/50356875100.pdf
    • http://gulavofi.epizy.com/bluetooth_usb_dongle_driver.pdf
    • https://uploads.strikinglycdn.com/files/f7b47b43-066c-4783-81b3-11c450f642fb/wufolixasupikibopujuteto.pdf
    • https://uploads.strikinglycdn.com/files/25fd7d4f-0030-457d-a74c-b04084d91323/how_to_create_a_website_using_wordpress_for_free.pdf
    • http://famuruvif.epizy.com/rslogix_5000_or_studio_5000.pdf
    • https://uploads.strikinglycdn.com/files/bc7b3b1c-4553-497b-898d-8e2ef58afd67/18516924974.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_off0000f3ab.bin
fd11a3ff64e103e10b5a9a095a03469a1b17463eae883e127ed658e87b7793c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 5756 bytes
font_01_sfnt_off0001074b.bin
3706da63b76ee342dfacde939f76cc6258837188f9a6cbf18353926544c11ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1074B 10356 bytes

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