Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd7c4cd1e1d4ba8…

MALICIOUS

PDF

71.0 KB Created: 2021-04-19 11:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 84ff9287b6d917ad931a876eba7e22fd SHA-1: 1d6c89717411ce43e7a669d9fb8fd57db0248ba3 SHA-256: 0fd7c4cd1e1d4ba809a5c85a17a4ee2ea73f41684f18391cc4f3756aeb54a431
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 0.9993

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://nipisod.ru/strik?utm_term=feta+pasta+salad+recipe PDF link annotation
    • http://shopeuro.pro/action_jackson_movie_mp4_hd_free6puk2.pdfIn PDF document text
    • http://lubozamesorox.iblogger.org/how_much_does_it_cost_to_repave_a_road_per_mile.pdfIn PDF document text
    • http://coolstudent.space/loxolivawaridojarad7ic9w.pdfIn PDF document text
    • http://latencfsrt.space/binomios_conjugados_ejemplos_resueltn2gnq.pdfIn PDF document text
    • http://fitness-ital.fun/doa_setelah_sholatihjjf.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/8e27ef6d-c479-440e-a8d9-3839e27efd66/repajozuvuwitusisega.pdfIn PDF document text
    • http://fizarurepolap.epizy.com/79028537063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fea9423-c9bd-40b8-b7cf-fca803ffd1a1/how_to_buy_happiness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/773c5434-73c9-46b1-a65e-ce296ea1b01e/93643724714.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/sesoxokatepotexo.pdfIn PDF document text
    • http://zaxukesaludu.epizy.com/odoo_chart_of_accounts_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d53c233-4bae-4971-8a8e-c7916db0969a/osha_safety_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b304ac5a-307c-4109-aecf-82a5919bb412/18366243032.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/83314413645.pdfIn PDF document text
    • http://nanojali.epizy.com/sezogariwu.pdfIn PDF document text
    • http://jifaradazuzigo.rf.gd/how_to_write_an_agenda_for_a_meeting.pdfIn PDF document text
    • http://sidegiri.epizy.com/eclipse_for_linux_ubuntu_14._04.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad607686-97c6-40fa-8f19-3891a8b9798a/kigenimovikes.pdfIn PDF document text
    • http://sedijinuv.epizy.com/wadudegoxugupizaperaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b9a54f6-19b8-4909-9b56-24ac136c68ec/how_to_make_her_love_you_forever.pdfIn PDF document text
    • http://tonikeb.rf.gd/mebabef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50515d5e-a369-4e00-84d7-fea65e50fb52/how_old_was_friedrich_nietzsche_when_he_died.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39f2ea8-f945-4a27-a93e-046b04fec3c2/43375264569.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_off0000d7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E3 5020 bytes
SHA-256: b46b366512dbb9cbd4553a7dbc0557a1f80df7857ae962cc4f58d33f9d65b503
font_01_sfnt_off0000e904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE904 10568 bytes
SHA-256: bc1cbba29a9ac14d2999fe97417abd217c99b4be6abe548b940f61bac10fe2cb

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