Malicious PDF — malware analysis report

Static analysis result for SHA-256 e362c5a26812aeec…

MALICIOUS

PDF

63.8 KB Created: 2021-03-04 08:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cb2a2856239a099c929049e5a0e948c9 SHA-1: 9485cf405e09c8bb9fbae7b5137398366f7d705c SHA-256: e362c5a26812aeec431bf5c10c514b7bd6c78f1e58845880813043e04e892531
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=united+colors+of+benetton+jackets PDF link annotation
    • http://nasty666.space/vupemuluwozadozh5z1.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/gggsXTJ/12010043432.pdfIn PDF document text
    • http://chambre.xyz/tenegiribufawizawavavodrfci.pdfIn PDF document text
    • https://nonokutofukidob.weebly.com/uploads/1/3/4/8/134872148/xoboxiduto.pdfIn PDF document text
    • http://vumexovuvelafe.medianewsonline.com/zenorubagebak.pdfIn PDF document text
    • http://ewop.space/70146817706tcqr5.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/hjgidii/36543164498.pdfIn PDF document text
    • https://cdn.sqhk.co/duzimisese/hbJ8pbQ/horizon_camera_app_alternative.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/ngijetC/ramp_car_racing_games.pdfIn PDF document text
    • https://gufurokis.weebly.com/uploads/1/3/1/4/131453316/43df3.pdfIn PDF document text
    • http://cleaner360.shop/flotec_pump_parts_home_depot50gar.pdfIn PDF document text
    • http://copyright-securityx.com/zizotolajifarhk19.pdfIn PDF document text
    • http://ledimpress.biz/7089912122001mro.pdfIn PDF document text
    • http://okclub.org/bella_s_lullaby_piano_sheet_music_original3487d.pdfIn PDF document text
    • https://xibabajawaxas.weebly.com/uploads/1/3/1/3/131398380/bekobawode.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/payment_coupon_template_excelapv22.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/casio_wk_110_instruction_manualto7h9.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_off0000be08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE08 5288 bytes
SHA-256: f0b40db96cf2b51960b44b5487958c157eac8312246beae70325cc86fca41ca9
font_01_sfnt_off0000d018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD018 9944 bytes
SHA-256: a62f88c863add7675a3a1a3a16bdafcbb4a60423bc5a4cdf4dbb8c14954fa273

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