Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bc327360346045…

MALICIOUS

PDF

81.4 KB Created: 2021-02-21 14:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 409c23bdd0281cc169a9bda05a5f5837 SHA-1: f4e708157f3b85c5dfa1cdbb5338dd10ccdd762d SHA-256: 92bc327360346045048ba6eeb970ea0ca35a4c8bc23b8187311beb5ca7c106c6
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/123?utm_term=diablo+2+lord+of+destruction+mods PDF link annotation
    • https://nojamatisi.weebly.com/uploads/1/3/1/3/131384142/gezojerobetur.pdfIn PDF document text
    • https://dutukoviwu.weebly.com/uploads/1/3/0/8/130873875/894888.pdfIn PDF document text
    • https://miwawedunosojoz.weebly.com/uploads/1/3/1/6/131606480/xikubine-porekid.pdfIn PDF document text
    • http://demask.space/finevobinetrjj43.pdfIn PDF document text
    • https://xilivixawigilu.weebly.com/uploads/1/3/4/6/134672458/088956d99d44.pdfIn PDF document text
    • https://vonewujin.weebly.com/uploads/1/3/1/3/131380349/nixisasorekab.pdfIn PDF document text
    • https://xadidevoki.weebly.com/uploads/1/3/0/8/130873902/8384882.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/951c90c53.pdfIn PDF document text
    • http://lg-copyright.com/timex_ironman_triathlon_indiglo_not_workingwjuhv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bufexa/slide_ppt_yang_menarik_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/17798813012.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/ragovisalif.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/2017_movies_bollywood_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/owners_manual_for_samsung_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/90345383553.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_off0000ffb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB9 5440 bytes
SHA-256: 4e9096f9923af71c040a39f9c2cd37ed61974dd45990365c17905ec4ebbeb312
font_01_sfnt_off00011227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11227 11320 bytes
SHA-256: 731b472cad230de888ca0c57c1df096a6e60179d97a576f9d953e75933ba6026