Malicious PDF — malware analysis report

Static analysis result for SHA-256 62125dcd56ddf55e…

MALICIOUS

PDF

114.3 KB Created: 2021-03-11 04:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c2f368e9587e56e8c929c4d992fd5c6f SHA-1: 9d5f4e006ceb366f1941353b6fc597eb1d29aef7 SHA-256: 62125dcd56ddf55ee9052e4510fc9f8cbac5021200c5e5ff8984fd8b1c2d148f
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 0.9996

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/123?utm_term=angry+birds+transformers+characters+wiki PDF link annotation
    • http://jurojegame.getenjoyment.net/wovobatupekeluw.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/410786759.pdfIn PDF document text
    • http://wozuxel.getenjoyment.net/diccionario_hebreo_biblico_gratis.pdfIn PDF document text
    • http://majusenise.sportsontheweb.net/aeroduct_flexible_duct.pdfIn PDF document text
    • http://devivitonewe.sportsontheweb.net/22663304073.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/dipafuxe/tai_avatar_258_android.pdfIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_9fb57a6f921346f6a80968fd295fc8e4.pdf?index=trueIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_f4635538a2174710ab3a89d98daa90bb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b58a7f92-5a4a-4997-9e44-b04c50fd7808/d-link_dcs-932l_factory_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/pop_warner_scholar_forms.pdfIn PDF document text
    • http://sawisanomo.epizy.com/how_to_put_oster_clippers_back_together.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca6e0b6-fc8c-4333-80f2-0c3fe8e704b3/tegejugutozutefut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34607635-c1e7-4575-be5a-0f4261a3a2ab/bopoparegewenuz.pdfIn PDF document text
    • https://907864b8-ab38-4b43-b195-7646ee37c451.filesusr.com/ugd/c4b402_d6a506012a6a4406956bdd0c0f2b9c31.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c3e257-237c-48a7-ad97-45ba34eb00e0/download_holy_bible_new_king_james_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faa32ad9-1874-4c35-abf5-cfd0b1ab0ea2/canon_scanner_lide_210_user_manual.pdfIn PDF document text
    • http://nakepusigazu.epizy.com/how_to_empty_primo_water_drip_tray.pdfIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_6ed5825a655743b3adae312cda92d114.pdf?index=trueIn PDF document text
    • http://nifopufu.epizy.com/15172663703.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/javascript_format_number_thousands_separator_space.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17252 3288 bytes
SHA-256: 71df6b01bd31982b5a8eb93bc4e4624b4adb70dcf43762971e77e95a53f39c46
font_01_sfnt_off00017e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E17 5788 bytes
SHA-256: 4b4579bef374858722b5370b5d1441f8329e3b07f4c1602ba97408acdadabbca
font_02_sfnt_off000191c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191C7 13108 bytes
SHA-256: 37cc31dc8636ab6a2f4cd1c7ebe0619a863b3fde46b57fc3063fa9f7193be13c

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