Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea0f01f8c32bcd1…

MALICIOUS

PDF

74.2 KB Created: 2021-04-20 15:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 171d5ab3146a7937d732737e21a75827 SHA-1: eb762b27213b90f7f91b68ac0adb4f44e0895e5b SHA-256: bea0f01f8c32bcd12d16da34902e6e42c33b4a6a3839b3a8060c120f830db21d
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV. It contains numerous external URIs, with a primary focus on a link farm hosted on disposable domains, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to fitness, likely intended to trick users into visiting the malicious URL. No scripts were extracted, but the overall structure and URL distribution indicate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/strik?utm_term=how+long+do+you+need+to+workout+a+day+to+see+results PDF link annotation
    • https://xibemorebag.weebly.com/uploads/1/3/4/3/134355918/823140c8.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/59115980247.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/3694042.pdfIn PDF document text
    • https://mugoxebasupube.weebly.com/uploads/1/3/3/9/133999984/bametakelava.pdfIn PDF document text
    • https://ridixuzo.weebly.com/uploads/1/3/4/6/134605053/7fc2bf33c.pdfIn PDF document text
    • https://rikolalevagamer.weebly.com/uploads/1/3/1/1/131164452/zowudelinef.pdfIn PDF document text
    • http://pojokup.getenjoyment.net/buying_rural_land_in_texas.pdfIn PDF document text
    • http://wulutano.mywebcommunity.org/agricultural_production_economics_david_l_debertin.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/gisosuvutupedov_tadoz_xipag_zuzuxenej.pdfIn PDF document text
    • https://susulipazelavig.weebly.com/uploads/1/3/5/3/135335994/fe6406a1.pdfIn PDF document text
    • https://fumuradowije.weebly.com/uploads/1/3/0/7/130739974/zusirixuverat.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/sasufufa/35357266004.pdfIn PDF document text
    • http://wijarixeva.rf.gd/bolts_framework_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/47193790759.pdfIn PDF document text
    • http://sokivuj.epizy.com/gaming_wallpapers_for_pc_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32b1519e-b025-42b0-b382-13d8469c38ea/dofagamede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef01ef5b-3299-49b0-9a01-492dd375379c/presto_23_quart_canner_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_off0000e26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26E 5212 bytes
SHA-256: 8d570be2ce26eecd7e234fdc7f3e61df833f9b5758a349f15759d969f63c69e2
font_01_sfnt_off0000f450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF450 10928 bytes
SHA-256: 46a4a1347384b2418ef188c0766aa254edc3469f8fc99472d792b6a3cdfab7d7

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