Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa7ac373918cfb5…

MALICIOUS

PDF

72.9 KB Created: 2021-02-25 23:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c24bd5f12a36f9317567a06da372b1f7 SHA-1: a553c9e27681f0f1556730b1e210da7b510e0355 SHA-256: daa7ac373918cfb587fe469047f15af749755f076e2ecffdf80a7071d319e041
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://druttle.ru/award?keyword=what+does+seeing+111+mean+in+love PDF link annotation
    • http://zumewidife.mygamesonline.org/mens_health_workout_routines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_5fdbe5db8ba16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484636/normal_6012973dc4822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481993/normal_5fdbb63588e55.pdfIn PDF document text
    • https://guxulixekakuved.weebly.com/uploads/1/3/5/2/135294256/rigomo_ninapexebijogi_xaginenobomi_jafiludefox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451930/normal_5ff9b499d90b1.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/xuxusowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470040/normal_600a5bc08c5d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_60313bac22903.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/rekobaxu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481052/normal_5fecaec0cf8d8.pdfIn PDF document text
    • http://zoneeuro.pro/impressora_bematech_mp_4200_th_manualftq0y.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/newelojelinubav.pdfIn PDF document text
    • https://mubuxepuvu.weebly.com/uploads/1/3/1/3/131383429/nutazamid_pomuzodet_nugujululaz_bidejitorogov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413693/normal_60189fdd3f9f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosigegu.onlinewebshop.net/tuzugi.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_off0000e1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D6 5268 bytes
SHA-256: 72194b13933f17305b9b2ce893b6b7696e25b1fb952743426fbd28653dfe1cd5
font_01_sfnt_off0000f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B0 10208 bytes
SHA-256: 85fb53a5820429219ce94a77d72fbe2ffde66e2ee13da089aa0a0b04e6f1f8fa

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