Malicious PDF — malware analysis report

Static analysis result for SHA-256 3712e359b0d8cb84…

MALICIOUS

PDF

69.8 KB Created: 2021-02-28 12:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 35938d6032c836b6466d99fe30bac854 SHA-1: 4a0e88159f21095ffa6f27d15a95bd9022279808 SHA-256: 3712e359b0d8cb842918c3328cc6d99f05126bb7e1c77dbd08c51ed72e5ee650
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary one pointing to a suspicious domain that appears to be a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content.

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://resalured.ru/wix?keyword=pit+and+the+pendulum+test+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5fd7d5f8c324b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485810/normal_5fd9165926c31.pdfIn PDF document text
    • http://brumbum2.xyz/wajipokozabfx8k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_600ff2d179229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443329/normal_5fcb72a1d28f4.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/jazz_super_duper_plus_offer_6001ffiy.pdfIn PDF document text
    • http://umniashka.ru/20574494836umtj7.pdfIn PDF document text
    • http://euromarket.pro/2_look_oll_megaminxpe37b.pdfIn PDF document text
    • http://igonlinesupport.com/90742791328k3xw7.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/how_to_install_universal_steering_wheel_control_interface.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405660/normal_601a33258096e.pdfIn PDF document text
    • http://bestcreditcheck.info/flysky_fs_i6_rx_battery_setupdnoy3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabiwilurase.atwebpages.com/latin_american_masks_purpose.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/where_to_learn_photography_in_lagos.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/what_does_af_mean_on_cabrio_dryer.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/xezomesazabisixu.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/adobe_premiere_elements_2.0_download.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_off0000d6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B3 5188 bytes
SHA-256: 40ef4adb7718ea864d7baa5b56887c61371fb90f46921e7f1fa262774e16762c
font_01_sfnt_off0000e839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE839 10004 bytes
SHA-256: c065da2555e099ff0a8d8bc5289c989c3c02fb27ab60f225ae1a2fd1d2f7bdd8

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