Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7209fab96d4695…

MALICIOUS

PDF

74.6 KB Created: 2021-03-15 05:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 948124ee759148af728049219fb8ac83 SHA-1: d80b5564316df06b547c5538b8adcd9fc86c0e2a SHA-256: fc7209fab96d4695b676d1849331fdb3d2e74db759f9702f8e52bd50d9705afb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL being `https://botokaw.ru/award?keyword=bridal+march+wagner+pdf`. The heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` indicates the PDF is designed as a link farm on disposable hosting, further supporting a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the overall structure and URL distribution suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=bridal+march+wagner+pdf PDF link annotation
    • http://totalcreditreport.info/define_propositional_knowledge_tokfgkp2.pdfIn PDF document text
    • http://ecoservice-vlad.ru/duxejukagige6evux.pdfIn PDF document text
    • https://cdn.sqhk.co/baxikomo/yWSyjbI/dragon_simulator_3d.pdfIn PDF document text
    • http://igafnd.org/ufa_cinema_centeric5ds.pdfIn PDF document text
    • https://cdn.sqhk.co/xokekekav/ljiJmeK/61752177497.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/hijiZgh/86985243428.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/ramhaF2/3d_advertising_on_soccer_field.pdfIn PDF document text
    • http://cmb-societe.com/450291639778ikgn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pivunovukemo.epizy.com/gta_san_andreas_mod_apptoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424c6973-d3a2-44d6-9533-0caa15ff25df/how_to_find_your_google_account_name.pdfIn PDF document text
    • https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_36b7c528556a489cb971400fd3c07634.pdf?index=trueIn PDF document text
    • http://kavobomuvaweg.epizy.com/puzzle_games_apkmirror.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_94f38308667f412aa89bb4c96555ce8d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/372a8009-81b9-49a0-a4a0-dbff148671b0/67884675246.pdfIn PDF document text
    • http://datavofunuta.epizy.com/iphone_simulator_mac_os_x.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5054c8fa-ca2f-468d-9f43-dc2fd1c3ac48/honda_transmission_rebuild.pdfIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_6f8cc1c13d774ccd94754451ff3a132a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ecf07bd-1a66-497c-8833-dd57c7b6c423/how_much_does_a_pfaff_sewing_machine_cost.pdfIn PDF document text
    • http://javozajesaretu.epizy.com/save_the_cat_blake_snyder.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_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 5532 bytes
SHA-256: cfe2fdafb51632fe0841090fbacc6f15cc8e3fa9b7e95198ec5ddc5a2ed9af94
font_01_sfnt_off0000f65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65A 12020 bytes
SHA-256: 2daf0957e387370bfcf9dd687bbabaf9ee13f42ca846b0812ae3244fd1c30b84

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