Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b837bc4b1cf677…

MALICIOUS

PDF

74.4 KB Created: 2021-02-26 22:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fd1b9e8b0f04f460e1acc1bfd49f4a09 SHA-1: daca419e885f09daed6cdb3ca3a1a26e5d63d664 SHA-256: 64b837bc4b1cf6772e74206bd60c714c6d47967f6f5f2838bd2287cabda896cb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/award?keyword=ferrari+488+pista+spider+price PDF link annotation
    • https://vifegozotamideb.weebly.com/uploads/1/3/4/2/134236473/dawinafisikovusib.pdfIn PDF document text
    • http://rigudozefogo.mypressonline.com/54481618319.pdfIn PDF document text
    • https://butopejejix.weebly.com/uploads/1/3/2/8/132814220/venixenepuru.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/beats_solo_pro_over-ear_wireless_bluetooth_headphones.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/3413261.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/bepamibuta.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/gonigagukejuj.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/lefevexipojazojo.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/bogonavigimubeg.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/46079244897.pdfIn PDF document text
    • https://gidelusibi.weebly.com/uploads/1/3/4/0/134040719/dimira.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/jjjgiji/feromava.pdfIn PDF document text
    • http://fancli.com/193wiaIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/welanisowari/traffic_reports_a12_essex.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/the_miseducation_of_cameron_post_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/7634104051.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_off0000e672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE672 5272 bytes
SHA-256: f71bbd333352021801ea5f5c13c887743c046373bc719e8cd9023fc2315148e5
font_01_sfnt_off0000f878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF878 10564 bytes
SHA-256: 3ee031d8c65bbd151bdb921664b2d7b9fc375419cc2e22d8b2d8ff61d7344661