Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd00c57827e62a77…

MALICIOUS

PDF

71.7 KB Created: 2021-02-13 03:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2de04168c16853f39b7dd5b75f097451 SHA-1: 8785dc09f7d39d10a395018333faa50dd7de430f SHA-256: cd00c57827e62a778377fd1ebb973e9ca57bba8b485c790ba2cff4ff0fc807d4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://yafferge.ru/123?utm_term=hand+signals+for+dogs+pictures In PDF document text
    • https://static.s123-cdn-static.com/uploads/4402721/normal_5ffe9799dd54d.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujonad/8hbigOZ/23996563496.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/fe434a366c650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383322/normal_5fccea8edf4b7.pdfIn PDF document text
    • https://mefufexuwi.weebly.com/uploads/1/3/4/0/134019004/3595058.pdfIn PDF document text
    • http://natorg.fun/gibozogodupujavesapijwwc63.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/gczw2hc/witasozulisumozupanubifi.pdfIn PDF document text
    • http://tgesheff.xyz/giorno_theme_sheet_musich7nb5.pdfIn PDF document text
    • http://creampiepow.club/4308235878ag6ya.pdfIn PDF document text
    • https://vimebadexij.weebly.com/uploads/1/3/5/2/135295776/4ba9c799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393364/normal_5ff11e5f61a4c.pdfIn PDF document text
    • https://cdn.sqhk.co/wotudasigeb/Igfzkic/dragon_goddess_tarot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dogabofeki.epizy.com/lepra_del_melocotonero_o_abolladura_taphrina_deformans.pdfIn PDF document text
    • http://vawolanuxoreg.epizy.com/96627998791.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/latest_bollywood_movies_mkv_format.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_off0000dc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC93 5284 bytes
SHA-256: 9764752bdfa3653627f21015f05b02709f80133191816fbd402ef61c72128dd6
font_01_sfnt_off0000ee98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE98 10464 bytes
SHA-256: 36bc48829f24018ab0d1f46b2cfc8836097060ab6e4c6cca465209cf9d035421