Malicious PDF — malware analysis report

Static analysis result for SHA-256 019a94d97f8d9cf2…

MALICIOUS

PDF

76.5 KB Created: 2021-02-10 00:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 47f2544baba7bfdd000392922bdfbccf SHA-1: 4ccdad91b3f6ed471bf8c3338f324375d24d5391 SHA-256: 019a94d97f8d9cf251969f28e87fecef880ad108132a83fca331d4907d282206
144 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=automotive%20engineering%20vtu%20notes%20pdf PDF link annotation
    • http://bionatur.space/encyclopedia_britannica_for_sale_wife_knows_everythingdkuty.pdfIn PDF document text
    • http://fragcups.com/pottery_3d_mod_apkjqyrx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489609/normal_6023066185031.pdfIn PDF document text
    • https://cdn.sqhk.co/fazovivum/ShiygcS/74499231361.pdfIn PDF document text
    • http://bt-management.website/35359400796ukjgx.pdfIn PDF document text
    • http://ndfnasg.xyz/40350118363n0mjo.pdfIn PDF document text
    • http://obschee.xyz/tracking_infinity_stones_mcuq91ro.pdfIn PDF document text
    • http://todayshop.website/comparing_mitosis_and_meiosis_coloring_worksheet_answers0a431.pdfIn PDF document text
    • http://blu-ital.space/giwanisimewofavyy3gd.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/wibedubosateg/albion_online_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/81000887227.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/nujilosejiderexodakolemit.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/veromazakimame.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/jifubaxawa.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/valajil.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_off0000ed34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED34 5168 bytes
SHA-256: df005a9a04f1a8355882528d9c31ee957c18f8a5095c19d46a0d0e08048e1242
font_01_sfnt_off0000fec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC4 11276 bytes
SHA-256: 252ac85d1952b2f00d58a8cb29589672f0fdb9eea61fae5ea5450e4e634f75a3