Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2fa59ab066363e…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 13:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a815f92d6d3432291044007c85f85ea0 SHA-1: 01c75fec437d65692420de18ba404e4aa6273cae SHA-256: 5a2fa59ab066363e307c410a97e841be12585d4d93fcb77a556270c6347b0c78
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://jacksth.ru/wix?keyword=huuuge+casino+hack+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465392/normal_5ffab215f2da9.pdfIn PDF document text
    • http://ctyr.ru/amplificateur_oprationnel_comparateurwhli2.pdfIn PDF document text
    • http://study-english-05.site/ankylosing_spondylitis_ppt_freemg7ss.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485591/normal_60179b869e17d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477910/normal_602339944b66f.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/outbreak_infect_the_world_apkydc4o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371025/normal_6006f2b4eef99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_600ecb1d366bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413236/normal_6019911dcc51d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_5fe704cd8b533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5fe84ac54276b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496146/normal_5fd77c0ae79a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_601cb00d249b1.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/sotudumavubax-fexanewerivoz.pdfIn PDF document text
    • http://pushbiz.fun/99802694712y47fj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_600639c28cde4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5fd07a3a728a5.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_off0000e2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 5232 bytes
SHA-256: b5dce0079fd0590c8f39464dfa86780dc08dabacfe2c4397b727a9f6d6f39d60
font_01_sfnt_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 10016 bytes
SHA-256: 8f4379446ad6dc5bd6a939a5a232d2e0f8b6c2da8c1c00bcaef689b496ff5175