Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e5e96fc9a83c85…

MALICIOUS

PDF

78.3 KB Created: 2021-03-27 12:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ddf8440f8e267c61e17dd5186581d754 SHA-1: a12d812a68071383c2875a20a51d17a55c3c0726 SHA-256: 92e5e96fc9a83c8524112c859ffdf102a96819942072464b142a76ceba418879
126 Risk Score

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 0.9964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/award?keyword=smoke+on+the+water+piano+pdf PDF link annotation
    • https://cdn.sqhk.co/wudawagirus/MlhihEX/advertising_vs_marketing_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/mekizojo/VaoqqrX/pixel_art_coloring_games_online.pdfIn PDF document text
    • http://jesofafisozosa.iblogger.org/14549822933.pdfIn PDF document text
    • https://cdn.sqhk.co/juzosugun/iifmAih/wolf_sounds_effects.pdfIn PDF document text
    • http://libralab.digital/cen_tech_p37772_batterye9zkw.pdfIn PDF document text
    • http://ritikutoxukor.22web.org/vonozoviwanufavanelon.pdfIn PDF document text
    • http://trychambre.xyz/bubble_trouble_pcchj4v.pdfIn PDF document text
    • https://cdn.sqhk.co/kibukumivu/XjfcVrX/that_s_amore_accordion_sheet_music_free.pdfIn PDF document text
    • http://idealica-co.site/683168091895yjnf.pdfIn PDF document text
    • http://rirurawixenane.iblogger.org/hemostatic_forceps.pdfIn PDF document text
    • http://migerov.xyz/vawamalitasamelagili2jaj.pdfIn PDF document text
    • http://goxopisejeza.22web.org/cargador_duracell_is1000.pdfIn PDF document text
    • http://bumaga.bz/siskin_dash_cam_hd_manualrwtbz.pdfIn PDF document text
    • https://cdn.sqhk.co/xexogataza/Jiejext/flags_of_europe_quiz_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakedexiradisiz.epizy.com/portable_pitching_mound_plans.pdfIn PDF document text
    • http://zuxamivim.epizy.com/gikekuriguxazovisokov.pdfIn PDF document text
    • http://loturorilod.rf.gd/femebogegopigesedozu.pdfIn PDF document text
    • https://db532842-334f-4efb-8993-e67ec8f20ff5.filesusr.com/ugd/bc5be3_e2cb995dc94844299a299f7f7349aacd.pdf?index=trueIn PDF document text
    • http://rifusurevaz.rf.gd/beach_fishing_equipment_uk.pdfIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_3d79e5c5d2664d3bb1d2db7394186829.pdf?index=trueIn PDF document text
    • http://bixodog.rf.gd/young_thug_power_mp4.pdfIn PDF document text
    • http://bubudisefo.rf.gd/how_to_read_resistor_color_code.pdfIn PDF document text
    • http://xenilesaripesu.epizy.com/segetuzaz.pdfIn PDF document text
    • http://makibiwediwanov.rf.gd/90998107546.pdfIn PDF document text
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_2b1e58bd3e9941379e863c57e07f7b34.pdf?index=trueIn PDF document text
    • http://denijutogowe.rf.gd/catalogo_vimar_2020.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_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 5328 bytes
SHA-256: 5f5a046d306cdb341644c08988275822689861b229e03b41f980493c4592e7aa
font_01_sfnt_off00010781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10781 10592 bytes
SHA-256: 08381df9567d4c9bec1d695fd84fb085d14e621e590bcc7e8e97a61ba621ce1b

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