Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7abbb62ebd2f3c8…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 04:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9a5cf8247a488a4209d9ba5baf1ca8f8 SHA-1: 172bbe176b7e43423514cdc8c884c22ce77add2b SHA-256: c7abbb62ebd2f3c89b94e712f7d18b60d4c29557f2e85b665ab3b2ee25a9f61f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • 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.
  • 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/wix?keyword=google+search+story PDF link annotation
    • http://tehnikator.ru/figurative_language_term_listn6dcl.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/brother_mfc-9970cdw_printer_driver.pdfIn PDF document text
    • http://helpforteam.com/1580364224ks5ef.pdfIn PDF document text
    • https://fixemebipufuw.weebly.com/uploads/1/3/4/1/134131586/bivunaxoxuje-dipurutasipojev-tatediladunudiw-jozomezi.pdfIn PDF document text
    • https://banetopebored.weebly.com/uploads/1/3/4/8/134874573/xepisisejuxogewojum.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/hfjesYY/zombie_commando_shooting_mod_apk.pdfIn PDF document text
    • http://ericksandoval.com/panasonic_kx-tg585sk_manualhg1us.pdfIn PDF document text
    • http://smirno.life/58691524604he7q0.pdfIn PDF document text
    • https://sozetodu.weebly.com/uploads/1/3/4/2/134265488/saribuwamuf_xepovolipajolog_joriwedid.pdfIn PDF document text
    • https://vadiduriku.weebly.com/uploads/1/3/4/4/134445950/mojuxi.pdfIn PDF document text
    • http://azules.ru/43356639383kbvrj.pdfIn PDF document text
    • https://sibubusede.weebly.com/uploads/1/3/2/6/132682984/5819117.pdfIn PDF document text
    • https://cdn.sqhk.co/bowawugafux/eKGgghf/kingdom_strike_heroes_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/jiRpm77/74398799578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kadoxosin.atwebpages.com/an_ember_in_the_ashes_google_books.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_off0000de65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE65 5196 bytes
SHA-256: 0e73bd80dd17f43bdb7e71cbd8aff01d645dc200e3f40750f77b1df7f7b6d5f1
font_01_sfnt_off0000f01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01B 10288 bytes
SHA-256: 8b164d7b837567be1f7dd0bc1850cb8ce6e26eee5bda1cee2b9e31b1c013adf6