Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b27bb6994be1316…

MALICIOUS

PDF

70.6 KB Created: 2021-02-07 12:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ba294c3c197f620a98dd8c152893efc SHA-1: 49db581b4a68b39fe7f11f32d018340172c52c51 SHA-256: 5b27bb6994be131645f36224cb1368aa6f33436feb10f6c2af661a70412f279d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=new%20song%202019%20%20bestwap%20dj PDF link annotation
    • https://cdn.sqhk.co/lagolipumepi/jcjgdyD/84762796993.pdfIn PDF document text
    • https://mixozanuzobese.weebly.com/uploads/1/3/5/4/135400893/4952221.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/QgniiYH/free_bubble_shooter_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530990/normal_6009e31a20b03.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/5153634.pdfIn PDF document text
    • https://takojozosuliwo.weebly.com/uploads/1/3/0/7/130739597/merezoxeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477163/normal_5fe90716a9880.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/fevumokafuwolux.pdfIn PDF document text
    • http://kirudoxidezogu.22web.org/udemy_ios_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_60093a2573ba1.pdfIn PDF document text
    • https://cdn.sqhk.co/bufutoje/hbhdZgr/ben_ten_wallpaper_hd_download.pdfIn PDF document text
    • https://guxatizozekeme.weebly.com/uploads/1/3/4/7/134733227/nosozuzexonidok_josurod_nofexowa_vikekezada.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/8idntjc/juvosivavas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453560/normal_5fcd35eb165f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_60106ed15fc61.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/rHEnhhz/20900016026.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/zaxawetawupo/litobegalijexetobuf.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/rulenutati.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_off0000d558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD558 5760 bytes
SHA-256: 9fd146b07d3a13ce3bcde1f046619ee912d19e6b63b205379e24b32ebaaf48a4
font_01_sfnt_off0000e922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE922 10700 bytes
SHA-256: 6230df973ddac3c207b0ff7e6671c9275e58a7c6dcdff30bd256a9e5ca6556e2