Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b0ddbdf2e1cafd…

MALICIOUS

PDF

64.9 KB Created: 2021-02-15 04:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a097cf40e39dcc26b06e2a82f9fc48f0 SHA-1: 985d3f1c16c7072d8653559c63a21e2e70024cea SHA-256: 25b0ddbdf2e1cafd109c1c2dd02f1040407b95ad3ae11fb65a66c4270849d4a9
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://druttle.ru/wix?keyword=scranton+tv+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405660/normal_600365a84fda5.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/gawaresireziluvoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5ffeb3d692e8b.pdfIn PDF document text
    • http://golosa-spasibo.ru/ice_cream_waffle_cone_maker_machinekppws.pdfIn PDF document text
    • http://ctuxuu.com/pozesujufinejiwimeseveuxgnq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456687/normal_5ff5b72b3bc89.pdfIn PDF document text
    • http://kiwirixup.22web.org/catalogo_cables_belden.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474759/normal_600643eccbfe2.pdfIn PDF document text
    • http://blaugrana.ru/30179608021xpwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_6028ecd56889f.pdfIn PDF document text
    • https://bemiredo.weebly.com/uploads/1/3/5/3/135322707/5ca2baa260bac2.pdfIn PDF document text
    • https://wubenigulusetib.weebly.com/uploads/1/3/4/7/134712949/ae80e63b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilaxeputeso.epizy.com/wilunetufufujekasaxaku.pdfIn PDF document text
    • http://muriporufulov.epizy.com/basics_of_python_programming_language.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/50212951381.pdfIn PDF document text
    • http://wawutanow.epizy.com/kirby_star_allies_free.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_off0000c370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC370 5060 bytes
SHA-256: 1f32e62c905a0eae9a5858f43fc8de56f811434e0ea15df57eb35adb02f2a5e2
font_01_sfnt_off0000d4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BA 9968 bytes
SHA-256: 6085c4687999b468c00c6f384928f27033c4445589c6eb9c5d80905967fe0917