Malicious PDF — malware analysis report

Static analysis result for SHA-256 47715462ba9c3bb4…

MALICIOUS

PDF

77.9 KB Created: 2021-03-14 01:05:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 06041fd683c67fd9a94165471694ab89 SHA-1: a58616fad94b24a54cf74e240e503de5d9774538 SHA-256: 47715462ba9c3bb48f226ec110195b586c982b8826e9a192d421aaa7a324e40b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains a search query that aligns with the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/strik?utm_term=survival+training+schools+near+me PDF link annotation
    • http://lanizimugigil.getenjoyment.net/libros_de_ana_catalina_emmerich_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5fee12909f9dd.pdfIn PDF document text
    • http://kejamezegujoz.iblogger.org/86536333164.pdfIn PDF document text
    • http://zonitupupafof.sportsontheweb.net/how_to_stop_feeling_touched_out.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/reversible_belt_conveyor_design.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/how_the_grinch_stole_christmas_auf_deutsch.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/poxumuzodiguvataxovupubu.pdfIn PDF document text
    • http://delinapod.mypressonline.com/fundamentos_del_voley_saque_de_abajo.pdfIn PDF document text
    • http://norasuzajo.mywebcommunity.org/76576705972.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/marantz_cassette_deck_repair.pdfIn PDF document text
    • http://zovolexune.sportsontheweb.net/winds_of_winter_sample_chapter_barristan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426541/normal_5ff61ec301b24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495841/normal_60419bcb46a89.pdfIn PDF document text
    • http://pokulumaj.iblogger.org/80080492239.pdfIn PDF document text
    • http://sebofafekorav.iblogger.org/android_imageview_onclick_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413851/normal_6007cdbc512e5.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/f146382a-b40f-4cd0-ade0-99320feaa321/wordpress_hide_login_username.pdfIn PDF document text
    • http://lijowavatajo.myartsonline.com/61494335958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a3d47d-1925-4530-8bb9-529acd6191b7/visual_basic_6.0_for_beginners.pdfIn PDF document text
    • http://gekazez.epizy.com/disneyworld_magic_kingdom_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a643d748-ec11-4324-9e4e-3f7d5d8548f4/dd_3.5_complete_list_of_feats.pdfIn PDF document text
    • http://xedemigu.atwebpages.com/plot_diagram_example_beauty_and_the_beast.pdfIn PDF document text
    • http://wanigag.rf.gd/49605069305.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_off0000f254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF254 5376 bytes
SHA-256: 7ddd67c8f56286c7ff17fb1334c5f601d801d58635c11a31583ba97b26b967a7
font_01_sfnt_off0001047b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047B 10820 bytes
SHA-256: 9f7f89c3af637fbaa2040cc48168960bf851f9783192be9579e3b8498f962af3

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