Malicious PDF — malware analysis report

Static analysis result for SHA-256 50cc39c40cd26336…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 22:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d149b123e791560fe6b20ff1b310003f SHA-1: 0b09d4c91e7f4a3cc7cfcc60ebe4fdf501921b47 SHA-256: 50cc39c40cd26336647d55cc107b2915514927ffb80ce41ae1c9b6121542e0f9
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://baarspo.ru/wix?keyword=biology+unit+2+cell+test+answers PDF link annotation
    • http://kavelizopepi.mywebcommunity.org/dometic_ccc2_thermostat_programming.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/what_does_the_bible_say_about_withholding_information.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_603629622ed59.pdfIn PDF document text
    • http://lafilubepojev.scienceontheweb.net/the_wave_arizona_images.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/jijalu.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/what_is_a_primal_fear.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368474/normal_5fdca41238086.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413004/normal_5ff09920a93b9.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/mobubinemopujofogipu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450746/normal_5fca7c65f35b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petojijoxura.onlinewebshop.net/daxumuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/commonly_confused_words_worksheet_4th_grade.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/the_book_of_questions_pablo_neruda.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/vowolovaxexitizavono.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/activepresenter_screen_recorder_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/dnrm_annual_safety_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B2 5340 bytes
SHA-256: 44c58b4044ca9794623e9ba25bf8bde225ec775520ee4681479cdbfae03de2be
font_01_sfnt_off0000d30f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30F 9736 bytes
SHA-256: ee5bae7cc488d6c0ac4367315c78432fc134494f14277f9cd9a1f03688db216b
font_02_sfnt_off0000f49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49B 16116 bytes
SHA-256: 3dae81b76154e7c62b3b0d30507344c78f02ee9172d09a03fe7a9af96af9e849