Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd30bc6d19202791…

MALICIOUS

PDF

80.1 KB Created: 2021-03-27 21:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: eaa8862f03bf6e9087ff044cc6958817 SHA-1: b11e7f1279e8c0cceef853c501b23cda0441115a SHA-256: dd30bc6d1920279112b1f807451475d4dbd4aae0b52e13637ad5128a0e3f21e9
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains a string related to 'gta 5 premium online edition', likely a lure to attract clicks. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware.

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://jumiwimov.ru/strik?utm_term=can+you+play+gta+5+premium+online+edition+without+ps+plus PDF link annotation
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/5231c68ae.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/0jihdxE/yandex_browser_with_protect_uptodown.pdfIn PDF document text
    • http://wisitens.online/water_slide_decal_paper_inkjetkm11d.pdfIn PDF document text
    • https://piwoviwilo.weebly.com/uploads/1/3/4/3/134386066/rumegimedu.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/arterial_hypertension.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/bokiwizigomu.pdfIn PDF document text
    • https://xavilisepu.weebly.com/uploads/1/3/4/2/134235747/xipudowi.pdfIn PDF document text
    • https://nudadisaxoge.weebly.com/uploads/1/3/4/0/134018155/pidanog.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/ljY6Rji/zebukisuxid.pdfIn PDF document text
    • http://lishop.site/cz_75_owners_manualytw2r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sagoralezerelo.onlinewebshop.net/3514786045.pdfIn PDF document text
    • http://paguxesij.myartsonline.com/xozasufatawamik.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/antologias_upn_tercer_semestre.pdfIn PDF document text
    • https://1f9cfe0c-d655-4514-b58a-75380282e405.filesusr.com/ugd/d31784_2247b2cd38144fe2b9c7026fd2e22459.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vufupu/vabadulelufupizi.pdfIn PDF document text
    • https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_d1b4883a99fb44f38ea17583af904017.pdf?index=trueIn PDF document text
    • https://2e5cbe44-7de3-4e3f-b94c-8a8567814465.filesusr.com/ugd/f96b02_2748a04c5f074bf9b48f4cd228d6e482.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7A 5596 bytes
SHA-256: e1f2635d5ea54b735d986332ea417759a4dc095b0738da8617d4a27618aabb2e
font_01_sfnt_off00010d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D70 10788 bytes
SHA-256: d21c0cfb9d34a946a73d77614b78cc03fc1bef8f54267ec0e40e278117509e0d

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