Malicious PDF — malware analysis report

Static analysis result for SHA-256 36695233a095fcc8…

MALICIOUS

PDF

72.4 KB Created: 2021-02-12 09:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d6877f1ecadf74d512e5fb02ee9bc223 SHA-1: feba8bc44c90930ad2d24168ae8e36cee68c005d SHA-256: 36695233a095fcc844a033f8b9b1e7b0ef0700b98875518d986f6409bd1ef7d1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=formation+974+reunion PDF link annotation
    • https://nivosuvadifo.weebly.com/uploads/1/3/5/3/135384950/buzorabatarez-valat-janesogodilor.pdfIn PDF document text
    • https://zirodamabesad.weebly.com/uploads/1/3/0/7/130740068/watuwik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416660/normal_5fdf6e12927cd.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/hjihhhj/escape_the_labyrinth_limited.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvuzebilet/gjjigjf/49606362801.pdfIn PDF document text
    • https://mowazaxof.weebly.com/uploads/1/3/4/7/134704653/xadura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392463/normal_60036de6a0459.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/iejaoZ7/wizurisef.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/yhgjcjg/27247255475.pdfIn PDF document text
    • https://lawejuja.weebly.com/uploads/1/3/0/7/130740077/jobifagimipupi.pdfIn PDF document text
    • https://votozugilom.weebly.com/uploads/1/3/1/0/131071295/123845.pdfIn PDF document text
    • http://lavka-karamel.ru/55895030626dl6ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488809/normal_5fccfdc4efc9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469374/normal_5fe03914b5a15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB93 4900 bytes
SHA-256: cc633628308438b5c22971c3b21c7495adf8f62e17635fe5488c7d8b3d3e80fc
font_01_sfnt_off0000dc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC35 10596 bytes
SHA-256: efa584482e95c53da20d0b86513d969b7cc6fcd343d2859fd458cc84c1413376
font_02_sfnt_off0000ff8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8B 16156 bytes
SHA-256: a35897730dba2f9556c9ce8fec40f38c09d21300e4569069d62957328d69e11a