Malicious PDF — malware analysis report

Static analysis result for SHA-256 875719faa819a664…

MALICIOUS

PDF

68.0 KB Created: 2021-02-10 09:28:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 987ea4658ccfa0e428b4fab8918f6947 SHA-1: 8ec582f6a4f73ff7e9a06c7c194164bdcd360a5f SHA-256: 875719faa819a664dc30c33dc317aafbcb6255ae6069d66f92cb551dbefffdfc
126 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
  • 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://jottigo.ru/aws?utm_term=letter+c+tracing+worksheets+free PDF link annotation
    • http://goproits.com/java_for_32_bit_windows_xphunrv.pdfIn PDF document text
    • http://cosmosqrab.online/492438226981e40c.pdfIn PDF document text
    • http://tameenegypt.com/10372470308e4um3.pdfIn PDF document text
    • http://shoppermarket.online/minecraft_mtier_de_clon_mod_1.12_2z6gkv.pdfIn PDF document text
    • http://doxisolawasusig.66ghz.com/73138231546.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/Usjbiax/free_read_along_books_for_1st_graders.pdfIn PDF document text
    • http://899themes-demo.ru/tidarezonurezubalazx0dkt.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/F9BijoI/57889105453.pdfIn PDF document text
    • https://cdn.sqhk.co/dujujema/LrDn0jj/zosavororeworudabigajak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447253/normal_5feb171267b2d.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/likerajatob/92575692120.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/gidematokonabedu.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/28573539076.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/29477794048.pdfIn PDF document text
    • http://pamiwumewamem.epizy.com/papa_s_cheeseria_to_go_apk.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_off0000ccac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAC 5208 bytes
SHA-256: 1abaac572aa32c17e5a901b358bd0db9a741c3a76ff0a3ea738fdec0baf3586f
font_01_sfnt_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 10876 bytes
SHA-256: 5c175a711d6e8b85e9116e1ebe451dfb7231136fc8a80e1561aa774331a03692