Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7a7ae68fc9d52e…

MALICIOUS

PDF

71.0 KB Created: 2021-03-27 17:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 22cb0ed4a4b340d32fcd27ab3497b40e SHA-1: 529a5f39a432361f3eb9c32d0cb80a1ec0be30a7 SHA-256: 6d7a7ae68fc9d52e268ad48af2cecc176ad996332ab098dde3b09bea2dad4aca
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, including one pointing to 'jacksth.ru', suggesting it's part of a link farm designed to redirect users to potentially malicious content. The document body is heavily obfuscated, but the presence of external links and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=everstart+maxx+sl097+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420599/normal_60265b42d2755.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/hbibhgc/87528995614.pdfIn PDF document text
    • https://cdn.sqhk.co/wisaputal/gw3hcii/tozix.pdfIn PDF document text
    • http://center-about.com/bharat_full_movie_filmywapvus0u.pdfIn PDF document text
    • http://nutosuvitiraj.scienceontheweb.net/bakibexelilakogog.pdfIn PDF document text
    • http://narixuz.mypressonline.com/62992710455.pdfIn PDF document text
    • http://it50disconto.info/que_es_un_bucle_anidado_en_programacionmj7ii.pdfIn PDF document text
    • https://cdn.sqhk.co/bamopilu/Wieh8ha/amazon_gutschein_fur_kindle_einlosen.pdfIn PDF document text
    • http://usacreditcheck.info/dance_academy_full_movie_freeqaioc.pdfIn PDF document text
    • http://norudumof.22web.org/64047658236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446646/normal_5fe16d3fe4dde.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/sanepegeweb.pdfIn PDF document text
    • http://mjawebdesign.net/netgear_n600_wifi_cable_modem_router_instructionszwuca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b61ae921-d093-4030-943e-7cbe1b556097/57946816461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/125cfc2d-dccf-45b7-b5f7-a2409e6cc184/gobozoxenowunokuzuba.pdfIn PDF document text
    • http://dinoxisajuz.rf.gd/a4_half_fold_brochure_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f4342f7-e4c5-4747-8b37-dc4180ef7088/john_calvin_institutes_of_the_christian_religion_translated_by_henry_beveridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0fa8910-cac0-45ad-acd3-1e1d3dd5cfb7/mogugonimusiworovobese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d62b41-48b8-4ede-89b2-7f3c50f2f428/big_fish_audio_vintage_guitar_loops.pdfIn PDF document text
    • http://nosawakudik.myartsonline.com/dekitavu.pdfIn PDF document text
    • http://sozufig.rf.gd/98428514256.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_off0000d7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F9 5296 bytes
SHA-256: b905f340f75fddc547608125bbb92eefe3fa05083fd6512b31f8cc8ab9d02719
font_01_sfnt_off0000e9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EC 10856 bytes
SHA-256: 85ea912da833bc8131d5c05613a396ae7fe103ed96e935bcd78c9a1ca4102256