Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44458951875b827…

MALICIOUS

PDF

80.6 KB Created: 2021-03-24 10:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4e4eab25e2592fd8d97d79b44a1fe746 SHA-1: 11d1da204405ada5330ce983142daaa5f6f0ef15 SHA-256: e44458951875b827f35a126014d3372f1d89b7b6f74cc52ae2fe86cde33acce4
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-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://jottigo.ru/wix?keyword=safety+first+car+seat+air+65+manual PDF link annotation
    • http://rusakova.space/ted_lasso_theme_song_title6yj3i.pdfIn PDF document text
    • https://cdn.sqhk.co/lewovazu/hgPkjjM/leap_day_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/gfib5hd/47223461577.pdfIn PDF document text
    • http://creditreportfast.info/what_is_a_demand_letter_in_a_lawsuittenwk.pdfIn PDF document text
    • http://sokfresh.fun/exercicios_de_torque_e_alavancagxs7a.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/iggi4ib/stickman_sponge_rope_hero_gangstar_crime_download.pdfIn PDF document text
    • http://gufutaca6.xyz/49720937432ao36k.pdfIn PDF document text
    • http://logoped-samara.ru/envoyer_vers_destinataire_windows_103lu6s.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/hefjfgh/electronic_structure_of_matter_worksheet.pdfIn PDF document text
    • http://xonigej.mypressonline.com/petusokaxekuruxuju.pdfIn PDF document text
    • http://tersq.fun/dagabotapaxufireroleriq9s.pdfIn PDF document text
    • http://zeludupixejufi.medianewsonline.com/2020_ashrae_handbook_refrigeration.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://rulamiji.onlinewebshop.net/39861624243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66931ad2-c13d-471f-8c5c-53ab9c21c44d/63094996473.pdfIn PDF document text
    • https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_842326dcbbcf4e7080ebba9ccc9a58eb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b05c2f4-07f7-466f-ba37-160ffd65fddc/10990364356.pdfIn PDF document text
    • https://8a5a474a-a671-4857-921d-d1df0ee72544.filesusr.com/ugd/523716_0142e5536c074b25966630c748f8a145.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/671edcb4-c235-4d63-a88b-d836297fdaa6/dipez.pdfIn PDF document text
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_51f33c44c9fd4d038566df5f952fb971.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9edeb591-68ea-426d-97e8-731972f38437/41390544210.pdfIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_f109dc7d4e7a452091df721a609d836f.pdf?index=trueIn 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_off0000f115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF115 5284 bytes
SHA-256: 9bf767a3eb94d2811a813eea4c78dde887b0e328c00689eb729316835ae70422
font_01_sfnt_off000102f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F1 10496 bytes
SHA-256: 97a6a0f74bb1a55a12c1cc48caa8671d0ca3c13fe1ba0c5aeb3866a98f9c8486
font_02_sfnt_off000126e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.