Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d71d423c4876ad…

MALICIOUS

PDF

81.2 KB Created: 2021-03-16 02:38:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ca2a5e084c40f5a60fde245f8df6320e SHA-1: 58e5b83f1b93bda38c000ada1c1e65dd61f17fac SHA-256: 00d71d423c4876ad2d2fce22c8a5410bf187dd1b42d54a2b619ea7fcf66f2eee
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 0.9998

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://dugedepap.ru/wix?keyword=jacuzzi+magnum+force+pump+manual PDF link annotation
    • http://fofumumitem.medianewsonline.com/42373706908.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/1LmpaYT/super_stickman_fighter_stick_wars.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/adam_4017_utility_softwareg0nlk.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/dewevixilopeviruxu.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/61144330470.pdfIn PDF document text
    • http://airned.ru/android_version_market_share_canadavm4pl.pdfIn PDF document text
    • https://cdn.sqhk.co/tedubifo/inhhide/country_song_quiz_on_alexa.pdfIn PDF document text
    • http://hookup753.fun/forinorufimirowafakourref.pdfIn PDF document text
    • http://bogplaktnc.fun/7624252562sjvqu.pdfIn PDF document text
    • https://cdn.sqhk.co/vowobupubuze/isPijhg/idle_theme_park_tycoon_water_park_cheats.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/d1ae3f8f-3d57-4c79-9752-03ed0363b9e5/whirlpool_refrigerator_replace_filter_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c328dc5d-bbbf-4944-9cf2-3f6a2160e039/88245280503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b07b528-18b1-41c9-94b8-f28543f7f06b/why_did_my_wireless_keyboard_stop_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df98fa1f-23ee-4450-be87-13246c716a09/historia_do_handebol_no_brasil_wikipedia.pdfIn PDF document text
    • http://bagugexasorip.myartsonline.com/que_es_inflorescencia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b9321e-ae98-44fd-b5e6-ae69fc8d3bcc/eragon_full_movie_in_hindi_free_download_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c421332b-503f-4397-a94e-a18692f18a03/gusebezuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981c0d00-9aba-45e4-b473-8313dc61c3ba/9651019621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b04515-3d09-4172-b348-94ec82b31e8a/batuketazisubixojomipiv.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_off0000fd3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3F 5196 bytes
SHA-256: 38535052d971ecb670da76e5f77106f72780c83b8c1dab7d59834654ca7fa968
font_01_sfnt_off00010ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE6 11820 bytes
SHA-256: 4541ac32d4b6536c5af190f5d77e1ea74efdbf13e36be5f8c64da942b5f95a1c

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