Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3771c8ddbdaefb…

MALICIOUS

PDF

97.1 KB Created: 2021-05-01 19:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ce3138ce47e11fa24d9f111e9f186108 SHA-1: 52bfd7e1e14da2335b94f6b686b8c96721c4b704 SHA-256: ee3771c8ddbdaefbc34038f218b712e89b753244ee23095ed16624b9086d5597
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 0.9990

Heuristics 5

  • 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 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://lozipotod.ru/strik?utm_term=self-reliance+can+be+defined+as PDF link annotation
    • http://topfrag.rip/mujeres_infieles_2_onlineg9iox.pdfIn PDF document text
    • http://icub.tech/the_secret_life_of_plants_stevie_wonder_album0lcq2.pdfIn PDF document text
    • http://redpandarecycling.com/daminiketomimepelosrsrck.pdfIn PDF document text
    • https://mopotiwifatuge.weebly.com/uploads/1/3/0/8/130813373/994165.pdfIn PDF document text
    • https://tifobavojosimiz.weebly.com/uploads/1/3/4/5/134505066/410979.pdfIn PDF document text
    • https://xakowuval.weebly.com/uploads/1/3/5/3/135316831/8914610.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/worasaripopiwav.pdfIn PDF document text
    • http://tiluvopira.medianewsonline.com/tenujuzivisokoxuzazisu.pdfIn PDF document text
    • https://wozovogunetip.weebly.com/uploads/1/3/5/3/135396590/b81a3f3ea9757f.pdfIn PDF document text
    • https://nedotumawu.weebly.com/uploads/1/3/4/6/134626041/7314360.pdfIn PDF document text
    • http://shopeuro.pro/central_pneumatic_21_gallon_air_compressor_parts_diagrampyxk5.pdfIn PDF document text
    • http://deutschebank-meine.com/56852681558az0ua.pdfIn PDF document text
    • http://agent-spv.space/uk_box_office_results_this_weekendknv81.pdfIn PDF document text
    • http://lnstagramsupportlives.com/an-_x2-_ab-_dhrio_manual_espaol91uhd.pdfIn PDF document text
    • http://eglo.club/what_to_do_when_you_are_unhappy_in_a_relationshipss97d.pdfIn PDF document text
    • http://trylait.pro/radio_spot_script_templatearm07.pdfIn PDF document text
    • https://fogovuraperikog.weebly.com/uploads/1/3/4/7/134713912/wujivalelenajon.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://xemunebo.atwebpages.com/92613780806.pdfIn PDF document text
    • http://getojigukas.epizy.com/50_shades_of_grey_netflix_country.pdfIn PDF document text
    • http://puxagere.epizy.com/libro_y_manual_de_funciones_excel_2013_en.pdfIn PDF document text
    • http://zazezinokigane.epizy.com/gym_exercises_download.pdfIn PDF document text
    • http://wubalele.rf.gd/77884478847.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A97 4888 bytes
SHA-256: 1a90b5c6e0af43a444059dbd158fd0d220a9aff1609c00a4037f63fc28d4b85f
font_01_sfnt_off00012b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B29 11268 bytes
SHA-256: 8077dfd89b9d00d53add876192e983965b75746d47008f2d84a3b34fcfd81757
font_02_sfnt_off000151ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151AD 16176 bytes
SHA-256: ba4b7fcdf0d9488ca0376167b795149aae2c8691ace432a29a1c8cf2f5aeb833
font_03_sfnt_off000166c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166C4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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