Malicious PDF — malware analysis report

Static analysis result for SHA-256 2221ae54d44878d6…

MALICIOUS

PDF

78.6 KB Created: 2021-04-11 02:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 251f68807817292827803d48eee38b16 SHA-1: ec6078c10f63e743eab71bd9a494b03f23af8c17 SHA-256: 2221ae54d44878d6bd1919e9aeab3ccb17b60cb9958062dc5b0a162f7809bae1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://xajibur.ru/strik?utm_term=1995+chevy+s10+fuel+pump+wiring+diagram PDF link annotation
    • http://kupivse.xyz/game_azur_lane_pcvlnc2.pdfIn PDF document text
    • http://chebsvet.ru/articulate_storyline_templates_free33ssm.pdfIn PDF document text
    • http://salebox.shop/3.5_familiar_guiderce4v.pdfIn PDF document text
    • https://buwapagav.weebly.com/uploads/1/3/1/3/131383965/b6a77a92e880e2.pdfIn PDF document text
    • http://fedezin.scienceontheweb.net/wejiro.pdfIn PDF document text
    • http://speak4pro.com/totelubovivonekiweluszims.pdfIn PDF document text
    • http://risumeboze.getenjoyment.net/joxotuvodulomaw.pdfIn PDF document text
    • http://peludofnor.fun/mijuzavonim4oy8u.pdfIn PDF document text
    • http://uber-global.com/how_to_install_waves_plugins_fl_studio_20hdoe2.pdfIn PDF document text
    • http://tradestaroffice.com/88792927705ywkwt.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/85406422611.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/idle_heroes_tier_list_2020ccvlh.pdfIn PDF document text
    • http://bebalezuve.medianewsonline.com/96559725790.pdfIn PDF document text
    • http://3bureaureport.info/86265097646w80sr.pdfIn PDF document text
    • http://instasurprise.online/45032771539f2joz.pdfIn PDF document text
    • https://kanapajuzusuma.weebly.com/uploads/1/3/4/5/134589940/jemobi_jedezaxowenifun_tafawekuxerunev_pibevokejawa.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/can_you_change_the_battery_on_a_samsung_a50jv06c.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/0ed839d9-53c5-4667-a80e-596674930694/basinilijuwolipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e17437-caac-4b8f-aa55-cc040521142f/wavuviriso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c9b44a6-18d5-4d68-9fe3-70dc1c5d831e/thank_you_god_quotes_for_another_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d68e23e-f34d-4130-a70a-4d5fcda024ea/generac_7550_exl_carburetor_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76b555e-e03e-403b-9c2a-6c8f7478f959/5_minute_crafts_actors_real_names.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_off0000f33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 6200 bytes
SHA-256: 9d27d10ec413804e9a77a12a58dbc7c26cae792677ef902a9c56a9134b537684
font_01_sfnt_off00010856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10856 10724 bytes
SHA-256: edea276ac7f5d9acad2374dba07e4f79f949d428d11ddc70c6c2d11d17c7c708

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