Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ead02ee5c20d04…

MALICIOUS

PDF

95.3 KB Created: 2021-04-05 17:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: eaddd2459eaafb03eb090f8aab4b528c SHA-1: b2c352d5a1c0f0168a7ad13f9c8f29ba628b92eb SHA-256: 60ead02ee5c20d0422347a19c9a6ba534ddbd28101aefe7d27e535efc9e755d7
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 0.9991

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://druttle.ru/award?keyword=formalismo+y+antiformalismo+juridico+pdf PDF link annotation
    • http://pejazadajenatew.getenjoyment.net/the_ethnic_cleansing_of_palestine.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/sketchup_2014_warehouse_free_download.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/76738569119.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/12563714679.pdfIn PDF document text
    • http://zusagukitu.mywebcommunity.org/30518511436.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_6045491a0dcb4.pdfIn PDF document text
    • http://nezatarofarix.getenjoyment.net/vexekukomatepivoto.pdfIn PDF document text
    • http://torchland.xyz/gopumaripirucyv4p.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/the_crown_season_3_episode_8_wikipedia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479938/normal_605d686ad9361.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/78582216410.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/propiedades_mecnicas_de_los_materiales_librosomu6i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423155/normal_600ca23e76279.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422371/normal_601cf150b7387.pdfIn PDF document text
    • http://lavkavkusa.store/gewuzapurjww7.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/9ab1aefa-5e91-42b7-aa73-1956d1287d28/linear_inequalities_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77063265-a942-4af1-b351-6885d4663267/how_to_change_schlage_lock_cylinder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a58d01b-8178-450b-8a93-c9529c5fb196/83898102119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76d69e91-1c4a-494c-b3cb-786b083ca0d0/bobut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789348ca-622a-46f3-bc7c-3ff89fa3f17d/student_academic_stress_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3edb7806-779c-48e0-8bd1-b505082537b1/gozibilomego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39bbff79-1ce6-404b-9783-e7182e0ebd3d/best_bread_machine_recipes_using_all_purpose_flour.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf1d621-e181-4246-a8db-158befc02aff/what_are_the_4_disney_theme_parks.pdfIn PDF document text
    • http://zewadomi.myartsonline.com/cuentos_cortos_en_ingles_de_terror.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13396 5432 bytes
SHA-256: e8d3a93dda0fa40dc4da0f97ce6398afa77aa51d9ab78d927842b014c524a10e
font_01_sfnt_off0001460c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1460C 12380 bytes
SHA-256: d654b8f661884a2dfdcbb487ef51c7fa11d3020eaf2d3a7ee7022dc1af64bc8c

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