Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd8e584368bf3cbc…

MALICIOUS

PDF

69.5 KB Created: 2020-12-31 15:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: cf208e3158c6b0176f5b2376edb9d90a SHA-1: 30e5e24266c62368901809fd9f107ebecef1ccf9 SHA-256: cd8e584368bf3cbc3883690bf57f4dce1a1d9e095f9857060c2473de4b782e29
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffking.ru/123?utm_term=deadhead+rose+of+sharon In PDF document text
    • https://cdn.sqhk.co/pemiduwegam/i8Zgehb/2d_stacked_stl_file.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/agW1gdj/jolulopatofejufizib.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/ghevggi/51821869957.pdfIn PDF document text
    • https://cdn.sqhk.co/zokelofid/hrHibjb/okay_thank_you_sir_ingles.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/hg7gije/crossfire_2020_car.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/RA1jhd6/3059674659.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/DigHjid/8456889891.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/RHiekIf/19442390838.pdfIn PDF document text
    • https://cdn.sqhk.co/simizekovogi/lhigdif/gorarapurapugifox.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/gAiiWns/taman_safari_call_center.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/sefukirexuwekij/android_5._0_google_account_manager_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/23930760073.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/handlebars_template_in_javascript_file.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/nissitissit_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/girlfriends_guide_to_divorce_episodes_imdb.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_off0000d2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F5 4964 bytes
SHA-256: 57f748d443d27647a66733f769ae95557d2ae45819341d2d385e12f1d762acfc
font_01_sfnt_off0000e3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 11020 bytes
SHA-256: 6adfe35a396939be090b7339f17da4845980016f071d08481ac5d12a44547c6d