Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf737879c742292…

MALICIOUS

PDF

67.5 KB Created: 2021-02-26 11:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7cb582499df1435022c37bc2c0168c29 SHA-1: 5d7095af19dc4a175cc898f8d7eb5363409a3404 SHA-256: ecf737879c7422920905abdab597085d4d79abffe354f9c1dfdaa49caab3507b
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://jottigo.ru/award?keyword=instructions+for+graco+pack+n+play+music+box PDF link annotation
    • http://yogait.space/find_the_murderer_online_gamekrvo0.pdfIn PDF document text
    • http://doctora.club/60302543582t38b6.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/T88Aigj/gopuwubedejetujuso.pdfIn PDF document text
    • http://graatorama.space/general_science_praxis_study_guidedugcp.pdfIn PDF document text
    • https://saworajopasu.weebly.com/uploads/1/3/0/7/130775294/saxutib.pdfIn PDF document text
    • https://cdn.sqhk.co/bobavijiwoba/ge5thdU/best_field_goal_kicking_android_game.pdfIn PDF document text
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/pekuperovafurumug.pdfIn PDF document text
    • https://legadiduzavof.weebly.com/uploads/1/3/2/6/132681829/nusepige.pdfIn PDF document text
    • http://sodaapp.club/time_management_strategies_for_working_from_hometia01.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/ijgPLtb/78607247397.pdfIn PDF document text
    • http://intekzafast.online/free_photo_booth_props_christmasbepwp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gomaxod/intellij_code_inspection_report.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/ceac._state._gov_genniv_ds-_260_form.pdfIn PDF document text
    • http://rutotonofawe.rf.gd/rojoxiwaxitinitesexifipim.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/23563586081.pdfIn PDF document text
    • http://xepuzuxomof.rf.gd/bienfaits_du_sport.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_off0000cb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7F 5644 bytes
SHA-256: bfdcf78f97ae1a8f723d951c6679be33bff5366e2d4811df3f24d30481a44990
font_01_sfnt_off0000deb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB2 9964 bytes
SHA-256: b1be47076ce30c6233cf07580693bf682f4fb3567e5f1f9fbfdca252e4763c65