Malicious PDF — malware analysis report

Static analysis result for SHA-256 272bd3d8e3934969…

MALICIOUS

PDF

69.0 KB Created: 2021-01-26 13:46:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d4020c7eaa45b20a7b41e895fea51430 SHA-1: 7a20f43c4b5f93bb240b59b96fda965629edd44c SHA-256: 272bd3d8e39349695ab99df23a9462599d2f2c49879966f61b288b03b1c9865c
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded links, many of which point to known malicious redirectors or disposable hosting. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of malicious links indicates an attempt to redirect the user to harmful content.

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
  • 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 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://traffine.ru/123?utm_term=midsummer+night%2527s+dream+no+fear+shakespeare+pdf In PDF document text
    • http://fruit-citrus.space/black_galaxy_iphone_wallpaper_hdtzr08.pdfIn PDF document text
    • http://savadaqwe.space/armor_stand_for_minecraft_pel7sxv.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/yjbjdhG/radiologist_salary_ct.pdfIn PDF document text
    • http://mp4.design/doomer_girl_memer2819.pdfIn PDF document text
    • https://cdn.sqhk.co/xagogudexo/jc0hcS8/shortest_free_kick_in_soccer_history.pdfIn PDF document text
    • http://discout.online/somewhere_the_vault_papers_mod_apku0ym8.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/hhdPNji/58835945385.pdfIn PDF document text
    • http://nosinoski.shop/eat_me_io_mod_apkfe1mi.pdfIn PDF document text
    • http://airbin.top/47455177202reyk9.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/ieJjdie/jemoluvogerojupososowef.pdfIn PDF document text
    • https://cdn.sqhk.co/movumatoz/ge3gfhc/bloons_td_5_apk_download_neueste_version.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/J7jbHid/free_printable_connect_the_dots_worksheets_for_adults.pdfIn PDF document text
    • http://vquest.website/crime_angel_superhero_mod_apk_android_1_commsppd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sonazorapabame.epizy.com/nccn_guidelines_bladder_cancer_surveillance.pdfIn PDF document text
    • http://norilonabu.epizy.com/basic_life_support_powerpoint_free.pdfIn PDF document text
    • http://muxajetolalet.epizy.com/14903942784.pdfIn PDF document text
    • http://nosijatigatu.epizy.com/gulf_of_mexico_offshore_fishing_report.pdfIn PDF document text
    • http://rulakilelakeze.epizy.com/big_ant_studios_android_games.pdfIn PDF document text
    • http://vezuzatutuxi.epizy.com/sefegijivubiv.pdfIn PDF document text
    • http://sokagozu.rf.gd/wujesubadije.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4B 5524 bytes
SHA-256: 41f58f5097b966120f98ca909d55322da8b195ba9ddc6624d8f81fe1cb00bf7d
font_01_sfnt_off0000e201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 10624 bytes
SHA-256: 14eeab8ea146b340049da87a743f6c138a0037cfea6f9ee5e0dd5944e7519622

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