Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6500c2bc193f72…

MALICIOUS

PDF

73.1 KB Created: 2021-04-10 18:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3e7652b6d29ea73bf4e6e401d3b4fe0b SHA-1: 8595bc6e57d60bf00275311d7ba89ed95187a34e SHA-256: fe6500c2bc193f72bd1d60b4c695abd4abec2ed3a3b75c204fa548e0b16cba16
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of a URL with 'euro truck simulator 2 product key for pc' in the utm_term parameter indicates a lure for potentially pirated software. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://nipisod.ru/strik?utm_term=euro+truck+simulator+2+product+key+for+pc PDF link annotation
    • https://venowogofopow.weebly.com/uploads/1/3/4/6/134611371/wuwafomevipedasukiku.pdfIn PDF document text
    • http://lazerepil.site/98563245411gtwtb.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/fwTgn23/jazijekivovavoganujemi.pdfIn PDF document text
    • https://zoluwapipapak.weebly.com/uploads/1/3/5/3/135321816/5985121.pdfIn PDF document text
    • http://aycotoro7.xyz/how_many_fans_do_you_need_to_make_money_on_tiktokjrcap.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/7061391.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/cjbKWgc/79669543690.pdfIn PDF document text
    • http://mstmail.space/yaesu_ft2dr_pricerpiwv.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/dish_network_package_deals_with_internetqqy61.pdfIn PDF document text
    • https://romesezex.weebly.com/uploads/1/3/4/6/134605020/gupul.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/egjfGgi/shark_dash_windows_8_download.pdfIn PDF document text
    • https://wojopegoguw.weebly.com/uploads/1/3/4/6/134690206/zodozefagul_ranuter_zejuvovovam_vovurexi.pdfIn PDF document text
    • http://my-favshopc.online/toyota_echo_2005_repair_manualk30rv.pdfIn PDF document text
    • http://filivugirigivub.iblogger.org/characteristics_of_terrestrial_and_aquatic_ecosystem.pdfIn PDF document text
    • http://chisto-chisto52.ru/pid_symbols_flow_control_valvebzrrm.pdfIn PDF document text
    • http://nnorm-id.com/xebup7jcn6.pdfIn PDF document text
    • https://rokotejipap.weebly.com/uploads/1/3/0/8/130814190/bolisavagazoniz.pdfIn PDF document text
    • https://tusozokusex.weebly.com/uploads/1/3/4/6/134678333/romisofipu.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://bofopigefofimun.weebly.com/uploads/1/3/4/0/134016695/6528960.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wowinagapujepok.epizy.com/ashokan_farewell_classical_guitar_sheet_music.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_off0000dedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDB 5556 bytes
SHA-256: 75e6ef361a4079597fe68f164287f5d10ce7bd2272a85c44991c4f5c8ea93ce6
font_01_sfnt_off0000f1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BE 10976 bytes
SHA-256: 62e43873034da284ea64d110232a4e1abb3ea535be160127448fc0c66478e82b