Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2fe07c94b673c2…

MALICIOUS

PDF

67.5 KB Created: 2021-02-24 19:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8bb8668d45cf0dad6014882c030b9006 SHA-1: 701a5ec8fc314650b910a76b266d8b25b0623016 SHA-256: 3b2fe07c94b673c2509eae0667be6f78d697d7b260eadc61c5859547f99dc63c
184 Risk Score

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://yafferge.ru/award?keyword=listening+fairy+tales+stories In PDF document text
    • http://larts.digital/98736082325jip94.pdfIn PDF document text
    • http://rigares.iblogger.org/zopowevuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467030/normal_5fcef01b7f4a5.pdfIn PDF document text
    • http://idealsit.fun/fovapagizefa1ln9f.pdfIn PDF document text
    • http://g2am2e.xyz/3319819544665cch.pdfIn PDF document text
    • http://texewofe.22web.org/32157377098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495385/normal_6028879b25763.pdfIn PDF document text
    • http://ifeelgood.club/gds_bpm_online_application_formy88q3.pdfIn PDF document text
    • http://winoraama.space/kalukodopadejofanufatu3tsmp.pdfIn PDF document text
    • http://kevogam.22web.org/63900278845.pdfIn PDF document text
    • http://lnstagramoriginal.com/572133124983se12.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/7046033470.pdfIn PDF document text
    • http://tufepuwaw.iblogger.org/fejavonakijapitobera.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/how_to_put_baby_in_graco_snugride_35.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/laler.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445114/normal_5fd2dd553955a.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/failed_to_synchronize_achievements_u6zpou.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/30120640668.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wefubosapinu.rf.gd/sositeb.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/86442057649.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_off0000cae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE7 4976 bytes
SHA-256: 841c816b1b5fbdfa9eda2eb57fb16becd9583871b544f197585b1e512da60b71
font_01_sfnt_off0000dbf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF5 10316 bytes
SHA-256: ee71991ba8fb4e71d6b8a7f98ef7c9d6506ba6c1afe3139babc4ba20a83b89e8