Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d7fdd3bb7f4c43…

MALICIOUS

PDF

81.2 KB Created: 2021-03-16 17:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 829fc2e567e286391a400e7c9d5c49ac SHA-1: 10beba510b9cdd1f351da5f1e66f73c9a9750e79 SHA-256: 97d7fdd3bb7f4c43c5e1892a63823589f6c5aa4632c9e543ebdef915ac8e5909
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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://golowaki.ru/wix?keyword=modern+day+crimes+and+punishments PDF link annotation
    • https://fuvafejozogixuj.weebly.com/uploads/1/3/4/8/134878931/24015b3b1.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/LBiaggi/4691374285.pdfIn PDF document text
    • http://xuzotudaraderuf.mypressonline.com/pdf_file_compressor_free_download_windows_10.pdfIn PDF document text
    • http://xifadezuzurap.medianewsonline.com/how_to_write_a_case_brief_law.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/abb33.pdfIn PDF document text
    • https://fuxakenaz.weebly.com/uploads/1/3/4/5/134589300/xasokuwurusu.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/8817014.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/james_baldwin_biography.pdfIn PDF document text
    • https://belanuxaru.weebly.com/uploads/1/3/4/6/134670531/zazogidofagofa.pdfIn PDF document text
    • https://netemadore.weebly.com/uploads/1/3/5/3/135306203/dunabaso_felevawe_nixamuvopituk_wudem.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/5895888.pdfIn PDF document text
    • http://purubifo.medianewsonline.com/coraline_the_graphic_novel_espaol.pdfIn PDF document text
    • https://cdn.sqhk.co/bimonabozo/N0hiXhb/89407517658.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/90751193404.pdfIn PDF document text
    • https://cdn.sqhk.co/rubalibuzodi/hdgjipa/zolusufukifobutexuxez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gupizamowakop.myartsonline.com/why_is_water_leaking_from_the_bottom_of_my_lg_washing_machine.pdfIn PDF document text
    • http://wuwepapose.epizy.com/mechanical_engineering_courses_near_me.pdfIn PDF document text
    • http://vinuwivuko.rf.gd/82719135198.pdfIn PDF document text
    • http://mosebokolerer.epizy.com/lutekenufomuripopireb.pdfIn PDF document text
    • http://raduniti.epizy.com/husqvarna_235_chainsaw_chain_oiler_troubleshooting.pdfIn PDF document text
    • http://vasikiga.epizy.com/utorrent_android_incoming_port_0.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B6 5272 bytes
SHA-256: abcf3e38bafa00c70f7df7effcf8695472538c0d90656fde8d2ac41356d6eda8
font_01_sfnt_off0001047d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047D 10688 bytes
SHA-256: 38bf0ac37fb4d431475447d58f2658d43ad56bc81944536d871c2c41badb4773
font_02_sfnt_off000128a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A4 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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