Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e5ecf5c013b8f4…

MALICIOUS

PDF

72.9 KB Created: 2021-03-12 04:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d16485aac6841e6ca673480dbfcbc371 SHA-1: 1a9c06d6fe6ebdc7909551c463f3452e1a94833b SHA-256: 47e5ecf5c013b8f4833a3b4513ab6af7bb6f29bd5b19a1b3f2c39444f9e8486a
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://botokaw.ru/strik?utm_term=kenmore+600+series+dryer+disassembly PDF link annotation
    • https://cdn.sqhk.co/mixaluwekitu/JifibjW/37109960063.pdfIn PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/ponokakogipox-koduvubogaf-suxenedijoxa.pdfIn PDF document text
    • http://wejesigozolireb.getenjoyment.net/nutasiwopozovug.pdfIn PDF document text
    • http://tehnopolis.org/fadujagujenujidyi.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/6745813.pdfIn PDF document text
    • http://fasad-dom.site/how_do_i_connect_my_epson_printer_to_my_wireless_network_mac96yio.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/8geVkgj/chicken_poutine_montreal.pdfIn PDF document text
    • http://axecheat7.xyz/fobem7demy.pdfIn PDF document text
    • http://nosinoski.shop/penejewepetapuvegpnt9.pdfIn PDF document text
    • https://cdn.sqhk.co/dudavizi/8ighdgd/sudefubifowopesidapupo.pdfIn PDF document text
    • https://mavukaral.weebly.com/uploads/1/3/4/9/134904766/73939e6d93.pdfIn PDF document text
    • https://xekozetona.weebly.com/uploads/1/3/4/5/134508060/rurifer-saviw-xagamowidego-vusebifak.pdfIn PDF document text
    • http://worldthailand.fun/1161655348kbzhe.pdfIn PDF document text
    • http://lebuvowune.getenjoyment.net/monosacaridos_disacaridos_polisacaridos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_1a8fa76078734a5d9e87f74f914366b1.pdf?index=trueIn PDF document text
    • http://rexenejo.epizy.com/geometria_analitica_formula_de_distancia_entre_dos_puntos.pdfIn PDF document text
    • http://tatovod.epizy.com/panesugufamiguxowi.pdfIn PDF document text
    • http://mokowiwar.rf.gd/adjectives_to_describe_people_s_physical_appearance.pdfIn PDF document text
    • https://f1c0478e-57b3-422a-b8eb-433964b677d2.filesusr.com/ugd/16c17d_fbc6aeb6319c45b1b237f569af962b3a.pdf?index=trueIn PDF document text
    • http://wopaxigaromuf.epizy.com/40063210779.pdfIn PDF document text
    • http://tilixufevoj.epizy.com/62661721404.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_off0000dbfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFD 5480 bytes
SHA-256: ad496f611ffe4b16fa5337310c4c061f46ab074eeee7973f76aa0dae747fbd2d
font_01_sfnt_off0000ee8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8D 11168 bytes
SHA-256: ba390826edc15f844a85e51f15fc1ed007ba567b69722ea7abde5913c6c0b582

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