Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c74eac6ec19ea50…

MALICIOUS

PDF

73.7 KB Created: 2021-01-27 02:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 081456daa6d7ba0735ec4241ab6faa1b SHA-1: 81adeb834842e222b1d3d9e3f40f357a78d576cf SHA-256: 6c74eac6ec19ea50121d2b09959e7a0c4a16106362bf4f552d282b1692d0d4f2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/123?utm_term=diagrama+de+ishikawa+pdf+unam PDF link annotation
    • https://cdn.sqhk.co/roretuduva/LVgdhcg/84587151135.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466143/normal_5fcfa89719772.pdfIn PDF document text
    • https://warazafipa.weebly.com/uploads/1/3/1/3/131381481/3751771.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/ejjgi2g/ark_wyvern_taming_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476567/normal_5fdb34a050043.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408174/normal_60033e7c302c2.pdfIn PDF document text
    • https://pozufijuxib.weebly.com/uploads/1/3/0/7/130775557/fimixuzubazag.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/3p3dlgq/noticias_univision_hoy_alas_5.pdfIn PDF document text
    • https://cdn.sqhk.co/nomazotesi/JQNogjG/35725453076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5fd77bf12cfe3.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/jijam6Y/35752017715.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/gisAnjf/dining_room_furniture_ideas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380695/normal_5ffb92aab8ea0.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/bGSPggl/application_dv_lottery_photo_tool.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/zukogi/95323263452.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/jobuze.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/algorithmic_trading.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/qaseeda_burda_shareef.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_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 5576 bytes
SHA-256: 0f9ef2c0c37f157b4cebdf7b07b33e9c5fa7400748cce1edcc745c1b62e3852c
font_01_sfnt_off0000f630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF630 10632 bytes
SHA-256: 9f2afaf76b58caf5d584334ec6dd6cf50eedaa6ba63aba4a6566271addf93555