Malicious PDF — malware analysis report

Static analysis result for SHA-256 e273be1edf288cbd…

MALICIOUS

PDF

66.8 KB Created: 2021-03-04 07:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9bf481d201256e495abfb4c1e9984784 SHA-1: 7beacba2317304028b305bb99da06e50d6771971 SHA-256: e273be1edf288cbd23fca96740b57e86be4d0621d3e6207ddd39481d048b13ec
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.8002

Heuristics 4

  • 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
  • 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://baarspo.ru/award?keyword=excellent+dumpling+house+menu PDF link annotation
    • https://cdn.sqhk.co/tozimozeka/ig0lngc/tigolobaboru.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/5541104306.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/keurig_model_b40_filter_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/webaxepibi/ijDgjjf/summer_frosty_icy_makers.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/dqhhgiB/love_letter_card_game_strategy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494140/normal_60128aeb8c27d.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/english_writing_for_beginners_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5fcc5108914bf.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/ibqhhZB/nolapajetu.pdfIn PDF document text
    • http://wuramegojuluz.mywebcommunity.org/devil_wears_prada_quotes_nigel_personal_life.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/sig_p938_parts_list.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/35162257981.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://teluroluxeterez.myartsonline.com/nidixezuna.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/hoover_steamvac_carpet_cleaner_no_suction.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/porazuwudebilubotusozo.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/m-audio_axiom_air_25_midi_controller_manual.pdfIn PDF document text
    • http://wepogevadapafa.atwebpages.com/foxanizunim.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0D 5088 bytes
SHA-256: 969ff572187af559591108a90cdb7c27c186d9e1ff19bc7529e7f99e7a6ff22d
font_01_sfnt_off0000df31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF31 10068 bytes
SHA-256: f1e7762e862d19f8cfed00a3f928c49d0295cefaf264f677b157c0d75e096c22
font_02_sfnt_off000101ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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