Malicious PDF — malware analysis report

Static analysis result for SHA-256 715e7ff6c6df78e1…

MALICIOUS

PDF

94.0 KB Created: 2021-04-18 11:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 87f8219a20e7c264e21dcd441e35bc44 SHA-1: 266b1a58920a9b52d3da20969648ca367e65f6ad SHA-256: 715e7ff6c6df78e1916798530aabbf45785fcbe5fd13e6ac61ce9dc896e32533
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a site offering driver downloads, suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and link farm characteristics further support a malicious classification, likely for distributing malware or conducting phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=acer+al2216w+treiber+windows+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418987/normal_6062f9042b3e1.pdfIn PDF document text
    • https://varusotefus.weebly.com/uploads/1/3/1/3/131398431/damowofilezo.pdfIn PDF document text
    • http://tgesheff.xyz/370579434193s2yj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420240/normal_604ddd2228655.pdfIn PDF document text
    • https://vatemiseviweriw.weebly.com/uploads/1/3/1/4/131453097/lazagubujuf.pdfIn PDF document text
    • https://cdn.sqhk.co/pajugeluj/jggdvic/office_space_bosses_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/totudavomud/N7Bkdjd/31145473188.pdfIn PDF document text
    • https://duzunadi.weebly.com/uploads/1/3/0/9/130969775/e1d77444f7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_603da6640ea3b.pdfIn PDF document text
    • https://rubebukani.weebly.com/uploads/1/3/0/7/130740450/wezixinoxow.pdfIn PDF document text
    • http://ifeelgood.club/excel_bedingte_formatierung_leere_zelle_ignorierenttr3e.pdfIn PDF document text
    • http://igcopyrightclient.com/ruretanorarefididixojobuewfpt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375699/normal_6026693f7a2f4.pdfIn PDF document text
    • http://seamanygau.best/polk_magnifi_max_sr_user_manualn0zw9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413011/normal_5fc71a755f569.pdfIn PDF document text
    • https://cdn.sqhk.co/dukizukijire/dm6Lvhc/givozikaviwazis.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/hggjegc/98341235162.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486552/normal_5fcc1a8e3ec91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_6030e6ec9a473.pdfIn PDF document text
    • https://cdn.sqhk.co/keliziniw/Bojagd6/amtech_prodesign_tutorial.pdfIn PDF document text
    • https://xozejobe.weebly.com/uploads/1/3/1/4/131406614/fasunawu-zadojadofuworag-bixakewujekitun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vigevot/student_finance_england_forms_and_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/18860507540.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_off0001309d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1309D 5636 bytes
SHA-256: fcf4bb17676b010b0bc4db78acdb0d5278086ed3522bc81c34a2d8b0877c85f1
font_01_sfnt_off000143e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143E8 10992 bytes
SHA-256: c8b4f7588e17c0d419531217c7c768caa1de146ce17bded86cb22c818cfc1684

Open this report in the interactive analyzer, or submit your own file for analysis.