Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d602502d1935ad…

MALICIOUS

PDF

66.6 KB Created: 2021-02-22 19:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a407f6186f0936211fbefc1ed3bb894e SHA-1: 16543a0cf43827b8c344e4c655d6044eac87e705 SHA-256: c2d602502d1935adb520a975be302089321b8c780677e06997a99fe8620576b6
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=what+is+the+best+battery+charger+jump+starter In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408335/normal_601d31ae91137.pdfIn PDF document text
    • http://vas-rem.ru/barbie_makeup_games_pcg40bo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_6020c45ea9c7c.pdfIn PDF document text
    • http://unonatur.space/66814080502sbhgc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446168/normal_5ff6d111cc275.pdfIn PDF document text
    • http://skameyki.club/hampton_bay_ac-552_light_kitujoov.pdfIn PDF document text
    • http://fekedusotuxena.iblogger.org/97280962991.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484993/normal_5ff3ce0ea88a5.pdfIn PDF document text
    • http://bit7.top/62264710812eccbg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421787/normal_602070751aeb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458824/normal_60256550c6265.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409113/normal_5fcd3a6818174.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubudafexajik.rf.gd/aplikasi_messenger_lite_terbaru_2019.pdfIn PDF document text
    • http://kaxiwifopev.epizy.com/oracle_sql_select_like_ignore_case.pdfIn PDF document text
    • http://kiromimejobodo.epizy.com/chunari_chunari_song_ringtone.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_off0000c772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC772 5644 bytes
SHA-256: b8f2d6f58c312fef3de0537e0167adc0b7d1b316a1e72f7a8f51270ee4260e03
font_01_sfnt_off0000da95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA95 10152 bytes
SHA-256: 63fc0fc19b365bcdcc4c842e51b5ae564c3153c5e085ce15ad9e49a4e30ffe51