Malicious PDF — malware analysis report

Static analysis result for SHA-256 2200323963b2a54d…

MALICIOUS

PDF

76.3 KB Created: 2020-12-24 18:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bbbe7f1593b727844fb3894cabaf4e3e SHA-1: ae96db8b53c8adeb49ef294fb7dcf22de5057f70 SHA-256: 2200323963b2a54d084bc843d652240725096a0b0158beb871407a30ec726afc
284 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document contains a large number of embedded links, many pointing to disposable hosting services, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document attempts to trick the user into installing a fake browser update or extension. While no scripts were directly extracted, the presence of numerous external links and the lure suggest the document's primary purpose is to redirect users to malicious sites that likely host further exploits or malware, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • 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://gettraff.ru/strik?utm_term=samsung+notes+app+free+download In PDF document text
    • https://cdn.sqhk.co/sakiforivona/6GYiNjd/trick_shots_fortnite_code.pdfIn PDF document text
    • https://mejebogisoxofix.weebly.com/uploads/1/3/4/6/134606558/bigegapafinarem.pdfIn PDF document text
    • https://lalusaguru.weebly.com/uploads/1/3/4/6/134611329/9904532.pdfIn PDF document text
    • https://fekalebewobazo.weebly.com/uploads/1/3/4/6/134668576/sigonorazizajav.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/Mijjggh/minetest_server_enable_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/terexugureto/SsMQxlo/rdr2_legendary_animal_map_locations.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/99895c8feff.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://cdn.sqhk.co/xobitabab/jdsQlif/30492732536.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/sujematovo.pdfIn PDF document text
    • https://cdn.sqhk.co/lerotakisisa/NijjeNn/dutitowujajemutut.pdfIn PDF document text
    • https://zurozudosumo.weebly.com/uploads/1/3/4/7/134719863/3259389.pdfIn PDF document text
    • https://cdn.sqhk.co/fakobijo/1gb5gfL/turbo_drift_3d_car_racing_game_mod_apk.pdfIn PDF document text
    • https://bekonerotukabi.weebly.com/uploads/1/3/4/3/134366377/jipugepumul.pdfIn PDF document text
    • https://ninuxegomozul.weebly.com/uploads/1/3/1/8/131871835/zidokiz.pdfIn PDF document text
    • https://cdn.sqhk.co/zifalulog/cAgfnhf/hurricane_warning_flags_for_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ed7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 5556 bytes
SHA-256: 851833b0bf77bd3f6476b2e94e8ee6f2dd50757754741a6c1a6c86502fc6d8bf
font_01_sfnt_off0001005d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005D 10580 bytes
SHA-256: a4e07c973de6aa57c69b6a824686a07e874dc00ecbf41779001ffea343963140