Malicious PDF — malware analysis report

Static analysis result for SHA-256 757a00e18dc1a7c4…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 19:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e0a09d183053e558e6812405d974f8b5 SHA-1: 68b0f2db6cf1faa260d9be2f0d1a025a69c231a1 SHA-256: 757a00e18dc1a7c4c65ce83afb9281e7c8c4571694009b506d30132de4352f59
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://druttle.ru/wix?keyword=bethlehem+presbyterian+church+archer+fl PDF link annotation
    • https://cdn.sqhk.co/tomibigi/iabuidd/wudumogepar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428334/normal_5ffbb230b7264.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_6000da370706e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_601798e7244d8.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/ejbiiie/42919820758.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/hjCCide/99035824082.pdfIn PDF document text
    • http://boledidezole.22web.org/free_printable_small_heart_template.pdfIn PDF document text
    • http://watenaz.iblogger.org/kadizusinawitamafeg.pdfIn PDF document text
    • https://jovonawokemurif.weebly.com/uploads/1/3/4/6/134678447/7377352.pdfIn PDF document text
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/vafanabejilupik-bepino.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/hilhgxi/fnaf_foxy_and_mangle_wallpaper.pdfIn PDF document text
    • http://aycotoro5.xyz/radio_97._7_online_mexicoj24f0.pdfIn PDF document text
    • http://mutedagagagexe.22web.org/19687903836.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379234/normal_5fc5ebdd52c5e.pdfIn PDF document text
    • https://kefomituwo.weebly.com/uploads/1/3/2/8/132815939/sovigopovobofu.pdfIn PDF document text
    • https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/petuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muwalolerede.epizy.com/training_certificate_format_in_word.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_off0000d4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E3 5544 bytes
SHA-256: 95e820ebb1884a6d06909542c63b889ba3280f7b64c78a76eb09e13c45681c44
font_01_sfnt_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 10080 bytes
SHA-256: a5f43ba1a0d56491db71e6f303eead8d178fe88cc715b697a0e153d0fdb9cc7f

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