Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79e558a56ee6de9…

MALICIOUS

PDF

74.7 KB Created: 2021-02-26 20:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44ead28a1912da6c1de33d2308697d4d SHA-1: c7fdcfdac59d9a227f2b05253e5b30c1269cb634 SHA-256: d79e558a56ee6de9e2f6b769f0f34f067f9a76b3fc3cf5a3bb33dbb72ccb6998
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://bologen.ru/aws?utm_term=pretty+little+liars+season+1+episode+7+cast PDF link annotation
    • https://cdn.sqhk.co/labifikup/jjfkHhg/pax_app_ios_removed.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/kalemawideroboko.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/ji4hegi/dude_perfect_youtube_subscribers.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxaroposa/XMhaSgd/21779298336.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/63642060817.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/words_that_start_with_koa.pdfIn PDF document text
    • https://cdn.sqhk.co/gawisibiw/jjaQZjf/classical_piano_music_sheet.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/40860054098.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/fgehfGj/sojodupemikub.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/why_is_economic_interdependence_important.pdfIn PDF document text
    • http://mizebojusur.mypressonline.com/nibipozutevawoborobegamos.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/zPhf8ie/rutogaj.pdfIn PDF document text
    • https://fadijugiwekonu.weebly.com/uploads/1/3/1/4/131410939/bbddb0e6e1895.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/bgjjjpF/dojipolabolevakuki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogivuwe.onlinewebshop.net/98631064635.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_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 5304 bytes
SHA-256: 2bfa670031792140b99645abe6890a419b7a8e0addfcf4865d1d67512fc6e94f
font_01_sfnt_off0000f9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C6 10516 bytes
SHA-256: aea68c961316114e3a942e8ef8b2cb760fd7043384b6b99704e24d415756f657