Malicious PDF — malware analysis report

Static analysis result for SHA-256 033f747c83770585…

MALICIOUS

PDF

71.9 KB Created: 2021-02-05 16:35:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f05e73569c26f410e629ec8210217e20 SHA-1: a257470cdfcbd6d62569f2ec522d5b41617fb6b5 SHA-256: 033f747c83770585d7368d91f50e7e5c071050784e16eb00282d9857da943f5a
144 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.
  • 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=chambers+dictionary+3.+62+apk PDF link annotation
    • http://pasoxegidameso.iblogger.org/neet_pg_2019_answer_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/bAgcF47/top_marketing_firms_to_work_for.pdfIn PDF document text
    • http://dutusejutax.22web.org/forte_sheet_music_software.pdfIn PDF document text
    • http://fudasoba.iblogger.org/pilalenavexofugujamus.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/0jaZ8he/6248788881.pdfIn PDF document text
    • http://geniusenglish.space/390820608770xwc9.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/c1zajjh/show_hidden_temp_files_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/jaguwubax/hhiaCJT/ethiopian_air_cargo_tracking_and_trace.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/gSVjagg/81506306820.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/satedafadusizo/narodiradije.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/black_bullet_bike_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/cryptic_crossword_puzzles_with_answers.pdfIn PDF document text
    • http://judejelalub.rf.gd/bb_pilipinas_2017_question_and_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/gefisibeva.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/best_offline_strategy_games_for_android_2019.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_off0000d25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25C 5976 bytes
SHA-256: 9ee482cc9ff2e22a948dc82f646b2d91bbd8fc4513d39fa89d0dd0d1f9ad2c90
font_01_sfnt_off0000e683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE683 13260 bytes
SHA-256: e71e5f2df376675b8728c76ba778ed83652b27b69b59fb4ddfeeac6c0b9e6c0a