Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fb53229e318ed7…

MALICIOUS

PDF

76.4 KB Created: 2021-04-26 03:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7ff4c4093fa1a6e1e86fa5e2a22efdbb SHA-1: 105fb65a019d08b1988c2474b731f889f40ea41c SHA-256: 47fb53229e318ed7d47fc0a38554da87db73f2462e6175c6633538a6de488897
126 Risk Score

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 0.9993

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://xajibur.ru/strik?utm_term=casio+g+shock+5600+solar+review PDF link annotation
    • http://cmb-societe.com/reforming_process_in_petroleum_refiningxdyy0.pdfIn PDF document text
    • http://popularchoice.space/how_to_reset_ematic_converter_box5c8et.pdfIn PDF document text
    • http://buytoday.cc/88643015742tjy8t.pdfIn PDF document text
    • http://buytoday.cc/movie_themes_flute_sheet_musicbq2m3.pdfIn PDF document text
    • http://astropsychology.site/can_cochlear_implants_fail1a9k2.pdfIn PDF document text
    • http://xezixaz.getenjoyment.net/43713414655.pdfIn PDF document text
    • http://newsportstechnology.ru/meilleur_antivirus_android_gratuit_2019_pour_tabletteoj8ie.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/xokodin.pdfIn PDF document text
    • http://vetebozo.mypressonline.com/pinazigonebukivoniguzo.pdfIn PDF document text
    • http://gouliwer.online/vufapizerivokifdmtwr.pdfIn PDF document text
    • http://theporte.xyz/186043595225dhkc.pdfIn PDF document text
    • http://lakshmi-store.ru/94491798168ciw8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuwutexo.onlinewebshop.net/voperavozukewomojaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd59b017-5aea-4b90-a60e-26fa224260c7/what_kind_of_battery_is_in_a_g_shock_watch.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_05687f89bb8248849d4aae65f674ee7f.pdf?index=trueIn PDF document text
    • http://likutolejit.onlinewebshop.net/exercise_18_review_sheet_electroencephalography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0795f0db-534f-455b-86ae-743aa1ee70c1/soton.pdfIn PDF document text
    • https://1261df91-4e32-40b2-8b8a-4050d3c54cbb.filesusr.com/ugd/df69c1_a47d202ec8d8434887b66e2c43665be8.pdf?index=trueIn PDF document text
    • https://0c17d2ad-06a2-4efd-9128-26148cac6670.filesusr.com/ugd/44320b_6e56e56fe75b4040a8aa952bc229a247.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d45859-d88e-4ae7-957d-c3cc5e328191/how_to_change_source_on_fios_remote.pdfIn PDF document text
    • http://vutogebufuz.myartsonline.com/bafoeg_antrag.pdfIn PDF document text
    • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_170b8c94be9a4f47864372e8018fa94a.pdf?index=trueIn PDF document text
    • https://4b98dde3-f65d-4e11-807b-d4501949e87b.filesusr.com/ugd/4a7ebd_63e63a1ccaef4d3983117817a6f25adc.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB7 5604 bytes
SHA-256: 7446ce39b2c137d481a67277a6b846440a358ea89423aad8968addc304aac3b1
font_01_sfnt_off0000fecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECF 10980 bytes
SHA-256: c69fcf8ed4cd885e408b5d55702fd56f2d591ff1d1329acf7c573ca4acd52f2b