Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a7e76cd52b42d1…

MALICIOUS

PDF

72.6 KB Created: 2021-02-12 02:36:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9755a500f2738f8f0623e8163b46fb94 SHA-1: 23a6b93dd4003eae3de6a3dc61ac4049346a9785 SHA-256: 60a7e76cd52b42d171b41b33e33c80a4af77e2131a55b7a77d5c0332e98f65e7
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/wix?keyword=biomes+of+indiana PDF link annotation
    • https://mufabevazom.weebly.com/uploads/1/3/1/3/131382955/mudixap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366388/normal_5feb25994bec4.pdfIn PDF document text
    • https://nuvitofoje.weebly.com/uploads/1/3/4/6/134640236/4265620.pdfIn PDF document text
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/97417e.pdfIn PDF document text
    • https://tomumexajozovod.weebly.com/uploads/1/3/0/9/130969356/a64ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5fc7ebe82673a.pdfIn PDF document text
    • https://luzepomi.weebly.com/uploads/1/3/1/8/131856518/gewibenovowepikifosa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478393/normal_60010c202565e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452173/normal_5ff2005d8ebe0.pdfIn PDF document text
    • https://mepagalupotope.weebly.com/uploads/1/3/4/2/134265457/kawodaporunibuvoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_60061df10fc81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403948/normal_5ff5ede081e34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423471/normal_5feba35b48a6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_6010037bd7b9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409992/normal_5fcbe5825a2ef.pdfIn PDF document text
    • https://xopilinunerixaw.weebly.com/uploads/1/3/1/3/131380618/07a9dea0b172ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5fe1d11074f7d.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_off0000e067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE067 4972 bytes
SHA-256: a9abeafc4574b2bed3f09a5f2977adafeedfae794d30ccbcd8269ffbf53daf56
font_01_sfnt_off0000f140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF140 10620 bytes
SHA-256: 8fdba6f731b1da3e121b0916980ae6e901d740fda08d53ce94b6de126bc5d5e8