Malicious PDF — malware analysis report

Static analysis result for SHA-256 9413067cea6b8c58…

MALICIOUS

PDF

82.3 KB Created: 2021-01-20 15:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 2213a7450bee8c57a9f466cd646388bd SHA-1: 3a51ab0ac0f595d910b858a70363471bff9f01bc SHA-256: 9413067cea6b8c587535ed5ba96bf8fb052602b35f3d860ba9c6f5200b0b8f4f
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm with numerous external URIs pointing to disposable hosting. The PDF document contains embedded URLs, suggesting an attempt to redirect users to potentially malicious websites for phishing or malware distribution. No scripts were extracted from this sample, but the overall structure and heuristic firings strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wb?keyword=phoenix%20weather%20january PDF link annotation
    • https://cdn.sqhk.co/kisunika/0Xac5gC/94995026484.pdfIn PDF document text
    • https://site-1179282.mozfiles.com/files/1179282/personal_stickers_for_gbwhatsapp_apk_download.pdfIn PDF document text
    • https://site-1200144.mozfiles.com/files/1200144/gukevemuxibefu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_5f9ed1032fd01.pdfIn PDF document text
    • https://cdn.sqhk.co/dusivubeleza/gjqIhfS/cut_her_off_in_spanish.pdfIn PDF document text
    • https://site-1180194.mozfiles.com/files/1180194/minions_games_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/u2mRSia/cw_the_100_season_7_how_many_episodes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425214/normal_5faa2b97a2a9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5fc7b739dc197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8d62bcc1078.pdfIn PDF document text
    • https://site-1251274.mozfiles.com/files/1251274/varagazipemusomabibigov.pdfIn PDF document text
    • https://site-1213673.mozfiles.com/files/1213673/xozapononorav.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/gibieD8/firepisezefabezenim.pdfIn PDF document text
    • http://kopavavabigi.66ghz.com/6583683532.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/ghhifje/fl_racing_manager_mod_apk.pdfIn PDF document text
    • https://site-1174383.mozfiles.com/files/1174383/picsart_birthday_background_hd_png.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sonisan.epizy.com/how_to_delete_duplicates_in_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/antibacterial_activity_of_turmeric.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/template_calendar_excel.pdfIn PDF document text
    • http://jawikaginixuxuz.rf.gd/88238458858.pdfIn PDF document text
    • http://ximitexus.epizy.com/palojivexur.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_off0001054b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054B 4900 bytes
SHA-256: 2de57cb28aca5b4c8b4528713201b9201c5b30784eb852ca9220527fbfa9f516
font_01_sfnt_off0001160b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1160B 11188 bytes
SHA-256: dc9903a7c5809189bf8eca215cf7f859c48b13f42945e18aa343091f1b05b700

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