Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d10682a5a3273bd…

MALICIOUS

PDF

187.4 KB Created: 2021-03-19 05:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8e5ea24d77e1a4f5de51512ceb8014f5 SHA-1: 99bcd53394e048ddd0ef395f155c3b804e073015 SHA-256: 0d10682a5a3273bd0a250bb9d943dea651b3fac783e3a19d931b3f3895b9bf89
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 0.9994

Heuristics 5

  • 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
  • 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://resalured.ru/123?utm_term=new+krishna+bhajan+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385612/normal_6048ccc50b65f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fecbf4e461f6.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/xiwor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446273/normal_600e7a7e16201.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/physiology_cardiovascular_systembcfcx.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/is_homework_helpful_for_students.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/i_the_one_action_fighting_game_apkq8gb3.pdfIn PDF document text
    • http://juxowupekabaf.mygamesonline.org/libro_de_cantos_del_camino_neocatecumenal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416811/normal_6019bb8195edf.pdfIn PDF document text
    • http://santaparker.store/puxiziggcbh0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388173/normal_602dcbc10a91c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipodowimovaxi.epizy.com/34666517849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb90f515-f10c-46b5-947e-c27de80126c1/game_of_thrones_cookbook_lemon_cakes.pdfIn PDF document text
    • http://balonofijusubi.rf.gd/descargar_diccionario_panhispnico_de_dudas_rae.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/soundcraft_ui_12_user_manual.pdfIn PDF document text
    • http://domumulavonevef.rf.gd/fujitsu_image_scanner_scansnap_ix500_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15229374-2ee6-4113-95df-b0023e2e702b/susan_sontag_on_photography_chapter_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3e0432e-e29a-40af-aaf1-0e9f471e7596/how_to_reset_usps_imd_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e27561e-42af-41dd-bd08-ee8396e4f5da/62378854464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe77a4c3-91ee-4e36-8bd1-e1afedfea928/rancilio_silvia_cleaning_tablets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcda2c4d-e716-4013-bdcc-d809c02d2fb7/missouri_algebra_2_eoc_practice_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6384d17-fe20-4f9c-8fc7-83384e27722a/98081562387.pdfIn PDF document text
    • http://tiredosutozol.atwebpages.com/ninotamebatopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412941ac-171c-4bc8-ad80-16bc82c1b966/the_coldest_city_graphic_novel.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_off0002aabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AABF 5256 bytes
SHA-256: 1f4a68317e99543f1b63199ca21f89d82f393eefd2742eee79142f312ed7ff5c
font_01_sfnt_off0002bcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCB9 10988 bytes
SHA-256: b08634877df07c93c7ab5457eef78d5e93b5108cd68dedd0a75d2e22a39ae0af

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