Malicious PDF — malware analysis report

Static analysis result for SHA-256 1574fdf053ef5d51…

MALICIOUS

PDF

69.8 KB Created: 2021-02-03 02:39:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bf6c7ca0f6efb2b3c1623f026f455c74 SHA-1: 67205cddfbfa94e57e90c5d80f723c25d3d18d78 SHA-256: 1574fdf053ef5d51cbdf25f00ae1106d5b7023129c254ea8764e3e339d495d04
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wb?keyword=hotstar%20video%20link%20er%20online PDF link annotation
    • http://evakuator-uga.ru/boo_berry_cereal_barsevwyo.pdfIn PDF document text
    • https://gisipunav.weebly.com/uploads/1/3/1/6/131636927/196421.pdfIn PDF document text
    • https://jozufibajas.weebly.com/uploads/1/3/0/9/130969385/zurabe.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/dead_soul_tribe_someday1vt1m.pdfIn PDF document text
    • https://cdn.sqhk.co/lutadamafe/fkggAgf/5257355817.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/gnhg0id/30882516293.pdfIn PDF document text
    • http://academic-club.ru/67185463360tfvjt.pdfIn PDF document text
    • http://domensita.fun/a_christmas_prince_streamingpby7t.pdfIn PDF document text
    • https://puxipevabama.weebly.com/uploads/1/3/4/3/134308905/samajixekurune-lafiwipazore.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/a3hevgc/emergency_call_host.pdfIn PDF document text
    • http://innov-cis.net/photo_collage_maker_for_facebook_freeexcqr.pdfIn PDF document text
    • http://stal-kemerovo.ru/rush_limbaugh_radio_stations_californiagrz4k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loxosufodu.epizy.com/finances_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/cymatic_audio_lp_16_user_manual.pdfIn PDF document text
    • http://dobejul.epizy.com/wupebodunavipe.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_off0000d60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60D 4904 bytes
SHA-256: 4f60cd1cc7a1200739325cd4d0a1e40f0c028ae530e88c38bc387768e3e9fe25
font_01_sfnt_off0000e6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C6 10472 bytes
SHA-256: 990e35abdf57381a1b9e7f830a5fc933278af2f34b78f972bb372e710435f877