Malicious PDF — malware analysis report

Static analysis result for SHA-256 db1826e8b2b51bb9…

MALICIOUS

PDF

88.5 KB Created: 2021-02-27 02:19:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f69252fd827082219289a69f7fbe5c97 SHA-1: 487e226c1ef75525235749a4e2d0ee11dad31b54 SHA-256: db1826e8b2b51bb95153fc90def584c417fa29fc70118145a9ee3fba944d6e67
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wb?keyword=what%20is%20the%20notebook%20about%20short%20summary PDF link annotation
    • http://peromopativej.mypressonline.com/how_to_reset_xfinity_remote_xr2.pdfIn PDF document text
    • https://cdn.sqhk.co/dipewoduge/bghhjPq/74963306469.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/60535807495.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/bxhikGl/road_rage_font_ttf.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/what_factor_influences_both_chemical_weathering_and_mechanical_weathering.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/cggjdjh/24209837000.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/ieNUKic/nimajenawunepizo.pdfIn PDF document text
    • https://cdn.sqhk.co/belumozobu/jcibEzj/yellow_fins_surgery.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudosikewemer.epizy.com/je_vous_informez_que.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/scroll_horizontal_recyclerview_on_button_click_android.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/13145168527.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/xuramenejexukem.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/cambridge_o_level_maths_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/tozatodike.pdfIn PDF document text
    • http://sexililelaweru.rf.gd/nordictrack_elite_5700_no_power.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_off00011cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD7 5212 bytes
SHA-256: 50e95724c8dccb1ffba8e3e1193d54e25334d5ddc0d493a4c7ef1d1f3df52cab
font_01_sfnt_off00012e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E79 11360 bytes
SHA-256: d54192673f585d341aa8618ff5aaf886bcadb43a8f2edf663c4f3b64dfd61533