Malicious PDF — malware analysis report

Static analysis result for SHA-256 491a6771eeea8bb7…

MALICIOUS

PDF

72.3 KB Created: 2021-03-02 13:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2ea1fbe6206d021069c323a6b6a5312c SHA-1: 05550651e62b20065718d9553b7736a7d410ef25 SHA-256: 491a6771eeea8bb78859c37523e79ecd16fcc164a56105005c957a19f0dda4a9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://botokaw.ru/award?keyword=why+does+my+fridge+not+cool+anymore PDF link annotation
    • http://dokelamalide.iblogger.org/fox_sports_2_singapore_tv_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463538/normal_5fce820be1a4f.pdfIn PDF document text
    • http://top-shop-store.website/editing_picsart_background_hd_images_download_zipkorcc.pdfIn PDF document text
    • http://ponaleke.iblogger.org/87890901765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_6037206f663c1.pdfIn PDF document text
    • http://gazopulodagifus.iblogger.org/broadlink_wifi_smart_power_plug_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457876/normal_5ffc4be3eac9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_60029561bb711.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilawovo.epizy.com/911410328.pdfIn PDF document text
    • http://bejopobu.epizy.com/aku_dan_dirimu_cover.pdfIn PDF document text
    • http://fofomekurun.rf.gd/telaboz.pdfIn PDF document text
    • http://sajorasuxanuvil.epizy.com/denatemebovapetumofarubib.pdfIn PDF document text
    • http://mitefarosut.rf.gd/fivejabexolisisugupi.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/the_adoration_of_jenna_fox_wikipedia.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_off0000df95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF95 5548 bytes
SHA-256: 6f3ec053b8ef66799de8c953bd901b781bc88ed778ce3614244c39025c653549
font_01_sfnt_off0000f260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF260 9856 bytes
SHA-256: e803eef10b06f6b1f0c5dbc327f92ad30c687f7afbb998aa360bc6f16b6b3224