Malicious PDF — malware analysis report

Static analysis result for SHA-256 e251b61a944e4945…

MALICIOUS

PDF

69.8 KB Created: 2021-02-23 13:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4673852fe3c915b0e5855de2b5770444 SHA-1: ffe25ee7652c8057aaaa06feafa638bb192d3f67 SHA-256: e251b61a944e494524ec7cb5d3c566bb020ee6717c1d6003dd20b556999ca1da
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=metric+conversion+chart+pdf PDF link annotation
    • https://cdn.sqhk.co/noviraxat/Dgdjjgd/dobepabenuwiduj.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/yhgyggN/55141682975.pdfIn PDF document text
    • http://gigurokubi.66ghz.com/mokuwobolomitajaro.pdfIn PDF document text
    • http://gubokiwurajot.iblogger.org/android_wear_os_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/hb3Bkii/suvobolopovibejinukizis.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/gdtagd7/56316419882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453129/normal_602b77918cf0f.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/fidiahb/poxize.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluniziwav/frZgghc/bubble_pop_electric_cake.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_600a25563d250.pdfIn PDF document text
    • https://cdn.sqhk.co/nezotelo/ZjeVgt1/76602000807.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://patabajisof.epizy.com/adobe_lightroom_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/tenubulixojibag.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/jimosuposerunusedodegus.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/thermal_physics_book_for_bsc.pdfIn PDF document text
    • http://vanumezaxibet.rf.gd/16760204851.pdfIn PDF document text
    • http://fokemag.rf.gd/61273760176.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_off0000d4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B8 5276 bytes
SHA-256: 59e98b67e4c8b4b041125b1f86d44bf723dd960ccd26ccae53c193ad0f240f4b
font_01_sfnt_off0000e6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B8 10428 bytes
SHA-256: 3ec0135d81e23cfe23a711d6631bcae370477f198f067f98abcd77d6e6f03b4a