Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8518caf4f89543c…

MALICIOUS

PDF

75.1 KB Created: 2021-03-29 22:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 04bd9e9a234fd64a7524324889721db7 SHA-1: 868f19bf268d48690841a078fff16229ec879c28 SHA-256: f8518caf4f89543c0e3a1252e04cf3438dab329e5534de3b2a36a38d3f7f5ae5
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://bologen.ru/123?utm_term=tri+fold+brochure+template+google+docs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402707/normal_604f7d3363418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_600c7cad4d582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420608/normal_5fdbeeaed3f16.pdfIn PDF document text
    • https://cdn.sqhk.co/tagodepa/U2jf3jf/quran_ka_hero_ka_film.pdfIn PDF document text
    • http://noxezef.iblogger.org/25638090661.pdfIn PDF document text
    • http://salonlabs.xyz/16413917507lbx53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366337/normal_5fd084d3e1a26.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/big_little_lies_song_season_1_episode_4692o3.pdfIn PDF document text
    • http://kittyplay.online/the_full_armour_of_god_bible_verse2luhm.pdfIn PDF document text
    • http://alisaborodaenko.design/python_format_sql_statement42l0n.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/fwgfxFV/mdickie_back_wars_pc.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://gesosogo.rf.gd/gebuxupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315f82ef-5fea-45de-99f4-31f5217d69fd/58363623085.pdfIn PDF document text
    • http://tuwemipidepu.epizy.com/payment_of_gratuity_act_latest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b1784d-3feb-429f-b52a-922526bd886a/92965425645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d6ac76-6ea0-4059-b6ab-1f8270e6612e/wemebofivupulibedobapal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42d57f6d-8025-4f8d-bae0-7d418ed52941/why_is_my_led_light_remote_not_working_govee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268f6f2f-c802-4ace-9553-3b72f889c71e/64036560097.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC17 5436 bytes
SHA-256: 6d273f2b077a849aef8a7073e11fa28dec0dcc6e1a400aff8a12c36769d52e11
font_01_sfnt_off0000ee8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8E 10184 bytes
SHA-256: 2eb449f8ec239f5e0088a5068efc4726e6eff00ebfe2f59a63439e546a8c8857
font_02_sfnt_off00011149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11149 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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