Malicious PDF — malware analysis report

Static analysis result for SHA-256 366d01c6d7b9864d…

MALICIOUS

PDF

62.7 KB Created: 2021-03-02 11:24:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0f4a6b7133bbb48d40d2cd314d6b2378 SHA-1: 031c581ed631f203ca26ac72937d43c66e73c300 SHA-256: 366d01c6d7b9864d2a10af112ee09d0567cbef15122ce8355731eb2679dcb722
64 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by 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 0.8280

Heuristics 3

  • 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=nac2h3o2+full+name+in+chemistry PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482860/normal_5fca2b301924b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415326/normal_5fefeeaec3ce2.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/where_do_chicks_come_from_book.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/lupajixejukogewodegep.pdfIn PDF document text
    • http://desokore.medianewsonline.com/16513727700.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/pqtJhev/boat_race_cockney_slang.pdfIn PDF document text
    • http://segaruzobuguses.scienceontheweb.net/17480054531.pdfIn PDF document text
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/zinodikexazivem_moziwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411923/normal_601e30c27be07.pdfIn PDF document text
    • https://lilofuzaxodas.weebly.com/uploads/1/3/0/7/130775659/4b538.pdfIn PDF document text
    • https://cdn.sqhk.co/zexupibo/4N9iaji/coloring_of_five_nights_books_suitable_age.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/Ijgyic9/verizon_cloud_restore_contacts_iphone.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/78630401815.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/where_is_atp_stored_in_muscle_cells.pdfIn PDF document text
    • http://jixewelo.scienceontheweb.net/how_to_cook_a_whole_chicken_in_air_fryer_oven.pdfIn PDF document text
    • https://netupujen.weebly.com/uploads/1/3/4/8/134868598/sotumugos-powibupulan-xafali-vibajuna.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/intelligent_control_systems_an_introduction_with_examples.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/pipejofofodo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/how_to_reset_netgear_range_extender_ex6100.pdfIn PDF document text
    • http://zevusup.atwebpages.com/how_to_apa_cite_davis_drug_guide.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD54 5488 bytes
SHA-256: 9b89004ea99620da06eae1e3d8b5962f7be040da8f3553c77f0622cef0b108fd

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