Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08073079933a97f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-19 22:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7a79dfc84b56eef3298cac2cf2a7fb19 SHA-1: f8bab727e492fe938ea7cde6c2f2a6f1df8c7b94 SHA-256: c08073079933a97fe254b00aa51f2c141c6a4efddbcb6de344497c7bbccf1b1a
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://maypoin.ru/wix?keyword=mision+de+una+tienda+de+ropa PDF link annotation
    • http://walletelectrum.buzz/porque_me_inflamo_despues_de_tener_relacionesw80cc.pdfIn PDF document text
    • http://natfreshik.fun/tepur8ri5s.pdfIn PDF document text
    • http://saratov.ooo/55691182327nk7ma.pdfIn PDF document text
    • http://hackins.site/961039106808kmpa.pdfIn PDF document text
    • http://pepufur.22web.org/nutepajafemusitujoxuguje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473619/normal_5fcbc249f1584.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/butudu.pdfIn PDF document text
    • https://rinavupitaf.weebly.com/uploads/1/3/1/1/131164375/xavoke.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/wujanozo/vans_old_skool_platform_all_black.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/nowemusupojomefegafoxu.pdfIn PDF document text
    • http://mitoxewer.epizy.com/3602755429.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/outlook_exchange_calendar_not_syncing_with_android.pdfIn PDF document text
    • http://kizuwopo.epizy.com/98002473488.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/ge_centricity_training.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/epilepsy_australia_guidelines.pdfIn PDF document text
    • http://ganasoniledaw.rf.gd/new_blood_cells_formed_in_human_body.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_off0000db64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 4924 bytes
SHA-256: 8cefd3da8067f040f4ff8285be4e6bfc5dddfa7990878cdc2e248ccb6a1c1ebf
font_01_sfnt_off0000ec3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3C 11588 bytes
SHA-256: da659caa2b42e0766eb1e7239ef3055a5bbab6e7e99dea229a6308c6d370a306