Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc19a71c2146180…

MALICIOUS

PDF

71.8 KB Created: 2021-02-14 01:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e6359df483bd586c5f42afb731107671 SHA-1: 9bbf3027348cd1700e865118347a8271295cb840 SHA-256: fcc19a71c2146180c5025165cb722a4d0bb12554ad17e2d2b3c96588bcfd6a38
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wb?keyword=feasibility%20report%20for%20poultry%20farm PDF link annotation
    • https://dulipitigisol.weebly.com/uploads/1/3/4/7/134717891/dijepijijo.pdfIn PDF document text
    • http://virnet77.ru/standoff_2_apk_mod_money_0._10._11x4ll2.pdfIn PDF document text
    • https://sisasava.weebly.com/uploads/1/3/0/7/130738988/nadevibemamapunosuro.pdfIn PDF document text
    • https://cdn.sqhk.co/ritafase/geghggr/18554647371.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/haJjaSV/kidcity_wwe_2k19_royal_rumble_draft.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/gZdgdih/ocean_rift_vr_review.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/Z5Sj3X8/zombie_motors_mod_apk.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/dowadotiju/60172862773.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/65191466816.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/amit_bhadana_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/divefarobo.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/super_bingo_game.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/jetilexu.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/away_in_a_manger_chords_g.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/formal_languages_and_automata_theory_course_file.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_off0000d8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DC 5244 bytes
SHA-256: 0628075b17965d8a74245904b408f0d5f53b64e998e353157ef30e42405cebf6
font_01_sfnt_off0000ea9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9F 12612 bytes
SHA-256: c708d60fdbe50e8ae29a8d8daf5b3b035cea788a845f7da57839914efb02ea97