Malicious PDF — malware analysis report

Static analysis result for SHA-256 801330760df508d6…

MALICIOUS

PDF

63.6 KB Created: 2021-02-25 19:53:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e6e8292d913d9d312d58929004df75bc SHA-1: 2118c09a2db3a9603bd43f0d704b667697a35734 SHA-256: 801330760df508d671be2695863bf3834bf7ca2fd7c71da457bb8b0dfcb08f8e
146 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=sunbeam+heated+blanket+keeps+flashing+red PDF link annotation
    • http://tupaxeguna.scienceontheweb.net/meaning_nature_and_scope_of_public_personnel_administration.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376369/normal_6024b5eb6e9f3.pdfIn PDF document text
    • https://sufusaripowo.weebly.com/uploads/1/3/1/4/131437865/gigakowegafak_pewelafa_gukexepasa.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/1404312.pdfIn PDF document text
    • http://nubolutlion.xyz/14494976235cl21n.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/HJWighe/throne_rush_hack_pc_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388835/normal_5fc7c42617583.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490141/normal_600105b010e11.pdfIn PDF document text
    • https://fexedewikefitug.weebly.com/uploads/1/3/2/6/132681233/6470086.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/xotomisen/25219912670.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/budujusebadotur.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/nawegoxajofakufare.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/why_is_my_hard_wired_smoke_detector_beeping_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/brave_browser_tor_android.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_off0000bbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD7 5764 bytes
SHA-256: aeb832f5ef01803da4f461f859e6ecfacebb588554f94345a97fb0b0751752d0
font_01_sfnt_off0000cf3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3D 10116 bytes
SHA-256: aeabc4ee90997097518df3a203c72f2f3567712b1e7c406b67bb0dd622c8c3bd