Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fd12d7d351ac33…

MALICIOUS

PDF

77.6 KB Created: 2021-03-21 00:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7e653b629aae0bf1fb39e281d103ef64 SHA-1: 9e46bbc89f04cf6433048e55968a21621d865983 SHA-256: e0fd12d7d351ac33811e22b86a54d09b70cf223c56e8820f0e1014e4baf31477
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 0.9997

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://seumenha.ru/wix?keyword=zf6+manual+transmission+for+sale PDF link annotation
    • https://cdn.sqhk.co/pijavagoke/ihjicgj/dune_release_date_change.pdfIn PDF document text
    • https://duxotitur.weebly.com/uploads/1/3/4/5/134596147/zurofowixukesew.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/jjhfytf/video_player_all_format_for_windows_7.pdfIn PDF document text
    • https://jaradaka.weebly.com/uploads/1/3/0/8/130813635/e4b3512.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/geo8geb/n64_emulator_download_mac.pdfIn PDF document text
    • http://goxopisejeza.22web.org/types_of_spelling_errors.pdfIn PDF document text
    • http://kifipawatixitaj.iblogger.org/49895523233.pdfIn PDF document text
    • https://majizozu.weebly.com/uploads/1/3/4/5/134598595/3732d0a7785301d.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/78944096746.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/29761796546.pdfIn PDF document text
    • https://wefekexuse.weebly.com/uploads/1/3/4/6/134685634/69d889.pdfIn PDF document text
    • https://xuvifadeto.weebly.com/uploads/1/3/2/6/132682806/721b3b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382962/normal_6024c3921d0d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389804/normal_5fc70d4f4849e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_604e97828d8eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vebaxabono.epizy.com/victime_bourreau_ou_sauveur_comment_sortir_du_pige.pdfIn PDF document text
    • http://femodizabofowu.epizy.com/92618991960.pdfIn PDF document text
    • http://negumigimewote.onlinewebshop.net/global_supply_chain_management.pdfIn PDF document text
    • http://kowejanaf.rf.gd/mr_bean_cartoon_episodes_3gp.pdfIn PDF document text
    • http://mopezuvo.epizy.com/cheppave_chirugali_3gp_video_songs.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_off0000f4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B4 5024 bytes
SHA-256: e984180636f1151b8d51a5a84ab307ce1f8a5149ede746c88d5f3a940b8d0819
font_01_sfnt_off000105b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B4 10496 bytes
SHA-256: f689fdd592978b115363811039e8f061b56297d4af2462e266d76dfe536befc5