Malicious PDF — malware analysis report

Static analysis result for SHA-256 696994d76ad7c88f…

MALICIOUS

PDF

70.7 KB Created: 2021-02-14 05:19:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 84be43ee419eedf0bf8169e6d77fd0c5 SHA-1: 6b03d83e9ce5dabca444491651002ea0af508c6a SHA-256: 696994d76ad7c88feb7282792efa7072ec0e672ba045edfa03ae64a777f5559c
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://leonvi.ru/aws?utm_term=bumblebee+vay+apk PDF link annotation
    • http://pasetbs.xyz/brochure_template_powerpointyss6k.pdfIn PDF document text
    • http://organic100.fun/bajrang_dal_song_dj_shashiz2zxp.pdfIn PDF document text
    • https://bikezurikol.weebly.com/uploads/1/3/4/6/134612173/3850627.pdfIn PDF document text
    • http://cartest.pro/bronze_age_inventions_timelinejjpm8.pdfIn PDF document text
    • http://chategratis.online/apush_review_book_2020023dk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381988/normal_5ffb04d1521b2.pdfIn PDF document text
    • http://demask.space/finevobinetrjj43.pdfIn PDF document text
    • http://mmamba.ru/zaterezoxixinajizizzaqp.pdfIn PDF document text
    • http://whitetwo.space/dezufinagaxedemukukixub01wis.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/nafoxuda/jafibebirofewe.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/soil_erosion_powerpoint_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/90037316165.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/vcruntime140_1._dll_rpcs3.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/43978211191.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/vebiritozuzad.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_off0000d35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35D 5108 bytes
SHA-256: 2119a4080bc629626e81c60822c0ea293fbfd904f1155650110609cd3b7e2a70
font_01_sfnt_off0000e4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B9 13032 bytes
SHA-256: 2f0b03af89b05b5f21b86acb6bc6077aa12e1df0f3af94867056311a4c132cd5