Malicious PDF — malware analysis report

Static analysis result for SHA-256 61216b6fc1b5c183…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 08:37:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0214fe492ae552d7a3c668c098ba9438 SHA-1: 69d90c3abbb42887d94f7693fc2ee76354ecd76e SHA-256: 61216b6fc1b5c1838af6ceea9ee20a5141f36a4e12ee155484489b8628d8a57a
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://dugedepap.ru/wix?keyword=mercury+115+outboard+motor+manual PDF link annotation
    • http://nafesotarun.22web.org/26965351006.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427809/normal_5fcacb8129303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425913/normal_60121ade49c54.pdfIn PDF document text
    • https://cdn.sqhk.co/gisanewat/0Okjjhe/lightseekers_awakening_flynamo.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/qhahj3X/creatures_mod_minecraft_1._14._4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_600998b3a590d.pdfIn PDF document text
    • https://lalusaguru.weebly.com/uploads/1/3/4/6/134611329/e19161.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457318/normal_6007edfd95eec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499635/normal_60059a6ef1418.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485305/normal_5ff338de64819.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369315/normal_600985b39ec2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486763/normal_5fc9cf9c9326e.pdfIn PDF document text
    • https://nagiliju.weebly.com/uploads/1/3/1/4/131412426/madatuzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_600dd82459e4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadutalafex.rf.gd/67383657156.pdfIn PDF document text
    • http://wudumiwetoveri.rf.gd/76140734603.pdfIn PDF document text
    • http://wesaxerofirivo.epizy.com/fosigujifuxomabox.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_off0000da09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA09 5332 bytes
SHA-256: 6b1845a07a10ce03e02fa5a4c8de9d149da57a5ee3d2d6ac490611419a854469
font_01_sfnt_off0000ec31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC31 13160 bytes
SHA-256: 285ac3a1f2f24f36932a86a76da5c312d8642ff17f77be5f1ac43b12ccd719b8