Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0fdef251066f9f…

MALICIOUS

PDF

74.1 KB Created: 2021-02-11 13:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e27ff8be656ecc99f7511570df2efd5d SHA-1: 343616567dd60e311cd9cd9eeb9a0f000b3ce7d2 SHA-256: aa0fdef251066f9f35b2c721188878f64a6129216c76cf629776997543e3fb06
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=accessing+icloud+photos+on+android In PDF document text
    • https://cdn.sqhk.co/jadepibake/iXuEjen/bus_simulator_indonesia_pc_online_play.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/chajgFF/l3harris_jobs_palm_bay.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/ily4WTg/jobuserixorajebawofovox.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/aieGQVk/etisalat_business_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/wadalibituge/ighjcgi/gimetolejekinov.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/ibohhzn/ice_cream_places_downtown_detroit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462046/normal_5fd7ab6e4d33a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490950/normal_5fe6f1809294b.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/hjOjahj/need_for_speed_no_limits_download_mac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5fd63aa391a99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_6013dc3fcbb45.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/jmchenm/zefewedoza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476122/normal_5fefb98e24fcf.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/dfhd5hg/2699893225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sirilamezowi.epizy.com/wugorudisifinudoxolop.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_off0000e4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 5324 bytes
SHA-256: d7df64925ef7631806873caf72ed2e8680cf222ee5c09c2c43cfe4f7bcb13b9e
font_01_sfnt_off0000f6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DB 10812 bytes
SHA-256: c6410f57834acf449d79d6ffadd2680f9aa23b2380d7650831d88655f08102b0