Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece4de1decd1bc7e…

MALICIOUS

PDF

68.1 KB Created: 2021-02-21 21:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 36441d03ce3ac0bf5d88152c09d937fb SHA-1: aed9aad0573f18a56cd2b6de6a977f683c6de443 SHA-256: ece4de1decd1bc7e99233dd38407a89f39dbf3702afef30a8435c8dbcf3ab52e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=ms+word+apk+old+version PDF link annotation
    • https://cdn.sqhk.co/tazifawixax/CjahjRT/80102361738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fd11a606cb12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369512/normal_5fe07085b5a21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477916/normal_5fc8714ee06c2.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/cdZ4ayc/farm_animals_storytime_craft.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/dwugrRM/monitoring_internet_dropouts.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/gjvwiaP/70293020294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497646/normal_60278e05c5347.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/fdgfhgk/download_rival_stars_college_football_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/s4jn9jg/gonin.pdfIn PDF document text
    • http://es50off.pro/ruxagivuwe3ezc4.pdfIn PDF document text
    • http://brosbass.com/salafipijuretofuk8sdf.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/gjctsdF/8202303077.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/cGihAtJ/lezotiretilesapinigan.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/jagux/breezer_vivid_shuffle_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wokutexamolajakejo.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/21935100825.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/cybex_arc_trainer_770at_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/nutuzipokugujuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/autocad_2010_free_trial_version.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/lomezudetomigajemapiwet.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/vipovixesojeje.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/50654466293.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_off0000cf48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF48 5172 bytes
SHA-256: 0fe71064d366e3ad954787f715cfe0d9241b573f6d8bc2ddfc33b17666e96fb7
font_01_sfnt_off0000e10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10F 9760 bytes
SHA-256: 1ac44e0def26333f4dd047c330dfb89bbd3395c722d0e6d18030f82dd7b64721

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