Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec474fd8062fd6d1…

MALICIOUS

PDF

75.1 KB Created: 2021-03-14 14:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: eb1b4546ec898db8b1996bb488318ee4 SHA-1: 1629e04401be7ca5709d3e7bef49618e6ad18fb8 SHA-256: ec474fd8062fd6d14d2b49089f5fc8b891f0dcc7836118907f28db0f608e62bf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=calendar+girl+pdf+fevrier PDF link annotation
    • http://kuwawaf.mypressonline.com/tableau_server_dashboard_export_to_excel.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/givafuwegujivelet.pdfIn PDF document text
    • http://arendagg.xyz/144282542367b3y.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/23605006545.pdfIn PDF document text
    • https://bogekivusuwi.weebly.com/uploads/1/3/4/6/134604255/zokadexamutiw.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/zaxozonubexagem.pdfIn PDF document text
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/giwaxupamezid-fukibewuzatudi.pdfIn PDF document text
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/9789476.pdfIn PDF document text
    • http://profer-opt.ru/shimano_ultegra_di2_groupset_price_philippinest8o64.pdfIn PDF document text
    • https://tezilejesitox.weebly.com/uploads/1/3/1/1/131163634/751142.pdfIn PDF document text
    • http://bitiwiz.medianewsonline.com/9305975131.pdfIn PDF document text
    • http://usesol.xyz/rurogaxikenupezegm2548.pdfIn PDF document text
    • http://tujemet.scienceontheweb.net/how_do_i_replace_my_hawaii_state_id.pdfIn PDF document text
    • https://tubidurifubadas.weebly.com/uploads/1/3/4/8/134885002/gobabuv-kegus.pdfIn PDF document text
    • http://ompala.store/43355117703bl05b.pdfIn PDF document text
    • http://sunazeremitiwu.mypressonline.com/linear_ae_500.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/ponufegozulijos.pdfIn PDF document text
    • https://lataladegizozav.weebly.com/uploads/1/3/4/6/134685495/fobirexode_dorozireg.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://safedoguno.onlinewebshop.net/zijam.pdfIn PDF document text
    • http://rixibedi.onlinewebshop.net/2004_toyota_sequoia_radio_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d96266a2-a2aa-4502-9ea0-c90d1635365e/kafefunepiwubumixam.pdfIn PDF document text
    • http://nivuzujanux.myartsonline.com/71394595290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a777c223-02be-47bc-8ee7-a19bc8df2d51/does_ignoring_guys_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9954ebf3-a61f-4fe9-8973-57b2b1b3c4f8/hornady_reloading_data_300_blackout.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD817 4712 bytes
SHA-256: fe61d6fee7e1aabde248239eab636dcf5883d2c66fd863eabd21d376d1fc05f1
font_01_sfnt_off0000e829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE829 12760 bytes
SHA-256: 3e447946e61efb6131058b7363ba70c4aed347386996df257e1c5af657733ffb
font_02_sfnt_off00010ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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