Malicious PDF — malware analysis report

Static analysis result for SHA-256 21dd41ffae40441e…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 06:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3df9a769daabd32ac4b4967fa7760262 SHA-1: 423d199edb6d37694c134f43e96ca52539fbb52c SHA-256: 21dd41ffae40441e52f1628630c77b1aeea3afd731def957ca8a6858ff3e511c
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://druttle.ru/wix?keyword=nurse%2527s+pocket+drug+guide+pdf PDF link annotation
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/mepedelexo_zubapavuzipejod_kokosavagelas_gonotipages.pdfIn PDF document text
    • http://topcreditreport.info/xadabipigisuwuremurbmw.pdfIn PDF document text
    • http://biomaniks.website/dapomujajigisuya4os.pdfIn PDF document text
    • https://xowonijateroz.weebly.com/uploads/1/3/1/3/131380337/7f7f8f1ae51c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493541/normal_602fdbe4dbd7f.pdfIn PDF document text
    • https://pujeradix.weebly.com/uploads/1/3/2/6/132695809/sozizelifu-posuzimamitamoj-pefisiwisiko-zimojinixepesa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5fce87faab0ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416923/normal_6001668177e15.pdfIn PDF document text
    • http://firstreadersclub.com/cftc_cot_report_chartpn74r.pdfIn PDF document text
    • http://pixxel.life/unsw_phd_thesis_word_template24ykv.pdfIn PDF document text
    • http://xobaxibudizoba.22web.org/81375745302.pdfIn PDF document text
    • https://lubefapezixa.weebly.com/uploads/1/3/1/3/131398117/poxijirovezon_getizod_xolakiwixol_jifoj.pdfIn PDF document text
    • https://terulupi.weebly.com/uploads/1/3/1/4/131406892/gegerelakifiwafiva.pdfIn PDF document text
    • http://jowesomovuwo.iblogger.org/ccna_200_125_arabic.pdfIn PDF document text
    • https://mojiwisixireze.weebly.com/uploads/1/3/4/6/134615440/paxofe-dulawixuzo.pdfIn PDF document text
    • http://zagetetedutiro.iblogger.org/60540836844.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gazunobopa.epizy.com/86944119160.pdfIn PDF document text
    • http://wixudilasajigil.rf.gd/70785984677.pdfIn PDF document text
    • http://dulanorelowekat.epizy.com/building_latest_wallpaper.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_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 5148 bytes
SHA-256: eb69cf9f695e7c6b574ec321f18027e92e36cf90c2ee12ead7f4d86bf8225da4
font_01_sfnt_off0000f248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF248 10624 bytes
SHA-256: 22980fdcf0dc3a31883ad06303dd22df7bc98b86e9fcb96f3743aaa7de7da6ba