Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3804f3472d20d62…

MALICIOUS

PDF

71.8 KB Created: 2021-02-20 08:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dadabd080b8ed7067efe50ffb40db88f SHA-1: bcdc8e11edd24904c227b0003d7bf3f70428740a SHA-256: c3804f3472d20d621d154d94eea821324db2a170b883934f86d4f2be19b48274
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=word+within+the+word+list+40+pdf PDF link annotation
    • https://cdn.sqhk.co/suxumeva/h3ijiG6/xutikixu.pdfIn PDF document text
    • https://gibiboxovozigux.weebly.com/uploads/1/3/4/7/134722082/fopirafebupesaxupoz.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/7302988.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/ghlhfie/fc_bayern_munich_old_stadium.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/ijhiQjb/rtc_mobile_app.pdfIn PDF document text
    • http://nowijito.22web.org/boozehound_crossword_answers.pdfIn PDF document text
    • https://solazipakiku.weebly.com/uploads/1/3/4/5/134509697/bisuratur_pobupij_mekomovugowopu.pdfIn PDF document text
    • https://memelixuluxowi.weebly.com/uploads/1/3/5/9/135958522/9295420.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/8198373.pdfIn PDF document text
    • https://fozivumi.weebly.com/uploads/1/3/4/7/134761275/5127567.pdfIn PDF document text
    • https://wofovadorobonam.weebly.com/uploads/1/3/0/7/130739883/bazufudogunepej-jamasazad.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/egjibje/keepsolid_vpn_unlimited_wifi_proxy_with_dns_shield.pdfIn PDF document text
    • https://zulozuger.weebly.com/uploads/1/3/5/3/135310252/mojudid-zegomoluwoku-jemales.pdfIn PDF document text
    • https://vesepuzimimewij.weebly.com/uploads/1/3/0/7/130776402/tujok-rofelafomu-nebezof.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/pirofopafu/75568960466.pdfIn PDF document text
    • http://fatufale.epizy.com/kendo_datepicker_format_dd_mm_yyyy.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_off0000dbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 5256 bytes
SHA-256: 72a5c668df50a1786b9f995e001095f228f1fccfc78142682c1db96425cd8230
font_01_sfnt_off0000edc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC9 10660 bytes
SHA-256: 36642a4c64587238a80ddb0c4927661e70d44751137a4310e7a8325a82dfbe19