Malicious PDF — malware analysis report

Static analysis result for SHA-256 9303a2c9c6071a21…

MALICIOUS

PDF

74.5 KB Created: 2021-02-23 18:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8b0559228e2fd6a112bae1b55d82f671 SHA-1: 0e11230a3839d709cdcc053fabf30ee3264bad9c SHA-256: 9303a2c9c6071a21349909dfdaae3d24cb754755a4ba0c046d76829151ed1e27
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://leonvi.ru/wix?keyword=merrill+lynch+retirement+income+planning+worksheet PDF link annotation
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/5610421.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/jetzwLu/fonts_emoji_keyboard_apk_download_for_android_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/navozaxezini/iXiaha4/dora_and_boots_best_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/Wifjgbk/2397459295.pdfIn PDF document text
    • https://ruzizoradum.weebly.com/uploads/1/3/4/3/134317959/ac6ff3439484e5.pdfIn PDF document text
    • https://roboxojepuz.weebly.com/uploads/1/3/4/2/134235986/13392d.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/4968314.pdfIn PDF document text
    • http://malespw.xyz/honeywell_lynx_user_manual55pry.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/eJsv9eB/94760306680.pdfIn PDF document text
    • https://cdn.sqhk.co/wukiratuxazo/lmZYqje/dumebakirupunidi.pdfIn PDF document text
    • https://fuvetowonilup.weebly.com/uploads/1/3/1/3/131383456/fuxidawitebo.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/jcZhb2o/angry_shark_simulator_3d_apk.pdfIn PDF document text
    • https://xasirazabad.weebly.com/uploads/1/3/4/6/134699738/2372815.pdfIn PDF document text
    • http://idealslimitaly-official.site/constitucion_de_venezuela_1811_resumenikcyf.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/hgDZhaT/ria_money_transfer_currency_exchange_madrid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 5612 bytes
SHA-256: 1c8990f08eaf6e43794f5c947a3f15c492319523d6d06ce67a2fc824fc02582b
font_01_sfnt_off0000f89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89F 10644 bytes
SHA-256: 37a0b66c69c162c91fe87fda12dd9839917c4ecd219bcbd595a912c0c307f9d7