Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab70676e9a1b25dd…

MALICIOUS

PDF

62.6 KB Created: 2021-02-21 00:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 43cbc634eb58a65a3e4da6bd2d7ebcc4 SHA-1: 443c00b381e444bb7eacb3a2e979f73e2f177edd SHA-256: ab70676e9a1b25ddfdacbea8bb133fb86d93bdde2e5cee12914972c024f478e9
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://leonvi.ru/123?utm_term=what+is+a+case+study+summary PDF link annotation
    • https://vagewojevibo.weebly.com/uploads/1/3/4/8/134873572/3145916.pdfIn PDF document text
    • https://wederubumojap.weebly.com/uploads/1/3/5/3/135393822/tixerix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423148/normal_602588addda23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387813/normal_6030d927ed3cf.pdfIn PDF document text
    • https://cdn.sqhk.co/jisokemefaz/idKgcCO/furuki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481173/normal_5fd6acbc6886c.pdfIn PDF document text
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/dogafoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426260/normal_5fdbe691b3726.pdfIn PDF document text
    • https://wawenefawopi.weebly.com/uploads/1/3/4/4/134494228/gubot.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/idjegif/13296537723.pdfIn PDF document text
    • https://cdn.sqhk.co/lazimafuxuxi/egjSXGh/11343921232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5ff79c82e44f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_601c7ae5e0f29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_6014bc512c83b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487641/normal_6018cd297c357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_6004faf36d744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486537/normal_5fdde28b40682.pdfIn PDF document text
    • https://cdn.sqhk.co/tokokoxisuf/Ti0XGgi/bitip.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB0 5264 bytes
SHA-256: 6fdb35010c3e7971b6160ad8caed0de5d01341f3511b02f17b9c7dc23e374d5f
font_01_sfnt_off0000cd78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD78 9432 bytes
SHA-256: cae7fd26a5de454dd4cb581a75624f6f037423f245f03a2e3bfbf86e25fc04ee

Open this report in the interactive analyzer, or submit your own file for analysis.