Malicious PDF — malware analysis report

Static analysis result for SHA-256 db619ae94acd0ad8…

MALICIOUS

PDF

74.2 KB Created: 2021-02-09 11:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0e136efe26b03f83dc1378b5a1cb872e SHA-1: ad9ad0a4db81094c4905b4162170c2b17f662447 SHA-256: db619ae94acd0ad80d832278d3fabbebb6f4905bd967f0eef3a702f15e64539b
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://maypoin.ru/aws?utm_term=polycentric+staffing+pdf PDF link annotation
    • https://cdn.sqhk.co/walamalesumi/Zwojb4p/64738875548.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/hbiygZc/tubemate_for_windows_7_filehippo.pdfIn PDF document text
    • https://cdn.sqhk.co/linaxezo/hgtxEhe/not_pacman_apk.pdfIn PDF document text
    • http://tiwigibafofovit.iblogger.org/bhaigiri_2_full_hd_movies.pdfIn PDF document text
    • http://reduslim-italia.website/1040381948899wee.pdfIn PDF document text
    • https://cdn.sqhk.co/zevukodixu/hhiKhbU/54014627114.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bukaduxanob.epizy.com/28627174029.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/dabatezemuv.pdfIn PDF document text
    • http://bumitorazefi.epizy.com/40041724125.pdfIn PDF document text
    • http://topadut.epizy.com/vimegekinikupiduxut.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/93819173817.pdfIn PDF document text
    • http://vagasobewinepu.rf.gd/cession_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/37011191664.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/farojexob.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/template_ppt_tumblr_free.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_off0000e5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 5428 bytes
SHA-256: 26d00c8894dff1b7c71c38782a2b5dd4eb525bdabe65dbc69428fe253ef289cf
font_01_sfnt_off0000f86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86C 10584 bytes
SHA-256: 19a0178a35c12acc2f8651302e57a8ed611f64b1352d82e4c09f5e813777274f