Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa06a9485f313ba6…

MALICIOUS

PDF

71.2 KB Created: 2021-02-14 13:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d8324347e8b9a90fdf551a0be4575a6 SHA-1: 460f84bb5fc98631b45d06517dc518b35a4a1ac3 SHA-256: aa06a9485f313ba618bdfa77f16f5fac08917fba4d2d806d979427d0b6094d09
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=composite%20function%20worksheet%20with%20solutions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469375/normal_5fe2627f87d8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386594/normal_5ff3186dbf16d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479235/normal_6018192c06b70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408177/normal_5fd7ebae71bed.pdfIn PDF document text
    • http://matroskin.space/felotikifituxivib31rn5.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/Thf7Ajg/adidas_x_star_wars_ultraboost_s_l_herren.pdfIn PDF document text
    • https://cdn.sqhk.co/kubafipefo/hvDxa01/tufenoxamil.pdfIn PDF document text
    • http://ejinaya.com/jar_of_hearts_pianovokjf.pdfIn PDF document text
    • http://obschee.xyz/dorcel_tv_w_nc4ti5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481061/normal_5fec86c66586f.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/Th11P4B/vujavutepevijizefazoderir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471488/normal_5ff9f14c4ae6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466413/normal_5fde7e9a05c28.pdfIn PDF document text
    • http://rabota-plus.club/76938664921hi14h.pdfIn PDF document text
    • http://5gusevshop.space/lasovoliraminumolujj04s.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/jiidh6E/amazon_go_store_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404740/normal_5fecae6e42940.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegefonupekowa.epizy.com/ranotuwo.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_off0000cfd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD8 5104 bytes
SHA-256: 8f519654d2ea7a3d7092216dabe8b3d694a0178479a26eb635bbb3e14b973c20
font_01_sfnt_off0000e124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE124 13588 bytes
SHA-256: e3cb2c807cea6ba40573621330100f8b5dd69997096c2b4a29c63319a0215ea4