Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf5ffe32d3a555b…

MALICIOUS

PDF

61.3 KB Created: 2021-03-10 15:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e993399b82dc5ba6c9fdab8f6ec8f64d SHA-1: bbc88cdd598c1e67c53c3d7ee568db7fa76a0d42 SHA-256: ebf5ffe32d3a555b841980a9a4ee8b4eeabc0d7c54ae63aa467ec513c2fd50d8
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 0.9394

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://zajinet.ru/award?keyword=cessna+421+service+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/lebereme/dnDchhZ/ekattor_school_management_system_wordpress_plugin.pdfIn PDF document text
    • https://cdn.sqhk.co/mupijuwo/5hdCBio/suwezaduwabadolure.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/hEhe315/e_wallet_account_registration.pdfIn PDF document text
    • https://lopazilavorelid.weebly.com/uploads/1/3/4/0/134097689/xukegupop.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/jhjjIhd/ebay_zero_bid_finder.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/jyibFvq/29809115704.pdfIn PDF document text
    • https://gesamuju.weebly.com/uploads/1/3/1/4/131453574/7cb05bdc478.pdfIn PDF document text
    • https://tagipuzato.weebly.com/uploads/1/3/0/7/130776724/7940792.pdfIn PDF document text
    • https://kafiwixuvaso.weebly.com/uploads/1/3/0/8/130874495/faluganoxugifiru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/how_to_learn_coding_for_free_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/aeroplane_game_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/logitech_x-530_5.1_soundsystem_treiber_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/availing_form_definition.pdfIn PDF document text
    • https://29bb9f0a-cb36-4278-8b1c-05d86a2267e4.filesusr.com/ugd/25e746_ce2a6451c0d9495da47118e69da6694f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ddf677-a3b6-4f4a-881e-fc397317e4ab/93682612224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f686d7ff-f6c6-4ad3-a784-e68a27cdbceb/26071804478.pdfIn PDF document text
    • https://98350ace-7ac4-4f38-a9d9-579fdad8050b.filesusr.com/ugd/9b2d9b_4cb77fa6f4324fcf99e46635ccda3f1f.pdf?index=trueIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_e80a0adb76ef434fac3d2fa3b6fc528e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/505dc4f2-13ce-43cc-a7be-ebc5bf78fcea/mojidunowuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04517974-9868-45e4-89e6-9d2dde3c2a7a/7354974574.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_2b5f51c380734bc18efc0ba2e3055912.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/falufusu/63532594534.pdfIn PDF document text
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_674eb026900b4852aa5add61dd9d1eb8.pdf?index=trueIn 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_off0000d133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD133 5540 bytes
SHA-256: fbd71a31e8bb4007e44a3b6287977793958f537d9c2fd66a32ee3ff3c8f45fb2

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