Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e7d61ef965b4f9…

MALICIOUS

PDF

70.0 KB Created: 2021-02-06 23:24:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3280848c78f85052e4120127b3159b4e SHA-1: e82cdff810e2ade64f639801b5d67189a4f9580a SHA-256: 97e7d61ef965b4f98bed0cb305acf4c21100b85452917189f1c7baa2139e023d
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wb?keyword=block%20story%202018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4503387/normal_5fd1e28e575db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448536/normal_5fca4de13f279.pdfIn PDF document text
    • https://totobulamu.weebly.com/uploads/1/3/4/3/134310137/7786765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417659/normal_60050d3841e26.pdfIn PDF document text
    • http://noxesim.iblogger.org/balika_vadhu_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379974/normal_5ff33f6b704a1.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/ifEgggi/orexigenic_and_anorexigenic_pathways.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474465/normal_6012905ae126b.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/sibggPi/eden_rock_and_roll_guitar_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/jhmZZhg/python_ssl_socket_server_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389601/normal_5fe3fab4baaa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392868/normal_601d96b5310f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379974/normal_5fe3abd2d512f.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/053ef2facccc7ef.pdfIn PDF document text
    • http://alifan.store/59973651519ahxwr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_60159bfb25a18.pdfIn PDF document text
    • https://kipidabivipili.weebly.com/uploads/1/3/4/3/134340994/9001992.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soxekig.epizy.com/checklist_format_iphone.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_off0000d5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B1 5320 bytes
SHA-256: 7042baa590f3bb87cd887d22bdf89074aea63dc8e27f4323624851e96387a852
font_01_sfnt_off0000e7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F4 10712 bytes
SHA-256: 617b8d7e68bc85b4b6978204592e086fe9c95122bb61497f8ae2f232e78eaca0