Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e9b2e120ed59c4…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 21:33:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e1619ff2aae8cbf38c2302fa82ff677c SHA-1: 38988383fae18a56671c6b9e6058d7508b0c8843 SHA-256: 54e9b2e120ed59c4b0f1908f878d64562a5c8cf774d49df3c61c99461e4bfc87
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 0.9665

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://crophysi.ru/award?keyword=what+defines+gospel+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419637/normal_600e4bee96aaa.pdfIn PDF document text
    • http://sebemigon.66ghz.com/17591697630.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381105/normal_600883321766b.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/what_is_the_newest_big_nate_comic_book.pdfIn PDF document text
    • http://gedawuxofawu.iblogger.org/business_statement_of_assets_and_liabilities_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377112/normal_603a91e8a186d.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/misery_book_ending_explained.pdfIn PDF document text
    • http://kabomodom.iblogger.org/widal_test_positive_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471948/normal_600d8d8dc3922.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471995/normal_600260939c1f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_60297a3bb7187.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388065/normal_5fcb4de2da5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453102/normal_60380aff5c629.pdfIn PDF document text
    • http://zefujixa.mywebcommunity.org/rokeme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_5fd8847cde511.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368956/normal_5ff2da505e683.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462036/normal_6007dbeab967a.pdfIn PDF document text
    • http://mutedagagagexe.22web.org/87070725859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376103/normal_603acc2726b1f.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/52a8d245-5f6d-4501-83fb-6105e1d65f6c/66286619837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e541a86-5d4d-4133-bac4-cc8a0949644b/losodusidaxikoxopenoxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf875ad3-59db-4af3-acef-d797af740f6f/how_to_replace_toro_lawn_mower_traction_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3794cb0-0ce8-4f79-981f-9536813cab21/how_to_open_a_supra-c_lock_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0971c653-c171-46e6-b10b-f1732e510cb5/97049892605.pdfIn PDF document text
    • http://sixopilu.rf.gd/how_to_attach_burley_dlite_bike_trailer.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_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 5488 bytes
SHA-256: 3914f87911400632c07dee3ec13ec8912d30df1a5a3e44f73ad714e982a65b13

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