Malicious PDF — malware analysis report

Static analysis result for SHA-256 8254a8247eae5c8f…

MALICIOUS

PDF

70.8 KB Created: 2021-02-23 23:38:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 114e41f2dda792fed99d42ae6a56350a SHA-1: f4a91975d96b5c90c898a61b84691a0dd32b5642 SHA-256: 8254a8247eae5c8ff1b1b2889100b50e4d57b82d09f4621fbd68c4297cfd6fb5
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/aws?utm_term=an+introduction+to+international+criminal+law+and+procedure+4th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/rexukewanej/jeOAnjb/xajawezolen.pdfIn PDF document text
    • http://proita.fun/40000750970bdmmg.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/icG9Vo6/barack_obama_soundboard.pdfIn PDF document text
    • https://cdn.sqhk.co/jogibigeda/gghiGji/23131501154.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/iffx7he/towomozopopukaravelule.pdfIn PDF document text
    • https://cdn.sqhk.co/vunebegawiwa/ihJ32ih/you_had_me_from_hello_bon_jovi_tab.pdfIn PDF document text
    • http://tiziwosujo.22web.org/dark_souls_save_game_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/Cgijehf/brim_combat_rush.pdfIn PDF document text
    • http://francobusiness.com/cisco_ise_2._2_hardware_installation_guidez4qht.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/IECMjg8/archer_hero_archery_battle_3d_download.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/visagogijulep/92081561382.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/53444683878.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/hpv_cervarix_vaccine_information_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/64270449652.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/solving_logarithmic_equations_worksheet_answer_key.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_off0000d622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD622 5384 bytes
SHA-256: 06d7ec50b624c71305b4e078c81c5b3ba9c5b0d7c3d48ecb5b14f4024857027a
font_01_sfnt_off0000e862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE862 10992 bytes
SHA-256: 754f8b2dc54b2cc4137e3c220be3a70a8c3f88c037a8a3fb2df4d056b28a24fd