Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b084c0d5853c45…

MALICIOUS

PDF

69.3 KB Created: 2021-02-23 08:28:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e96373d02eaa97a3bea1d7fcedd45318 SHA-1: c98bf46c0184b044e7e7d2ca40c784ca2815f105 SHA-256: 44b084c0d5853c459e2059f403aaddddf95cec3a0c3cf3ff7a83cf99d20eaeaf
244 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
  • 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.
  • 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.
  • 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.
  • 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://crophysi.ru/aws?utm_term=how+to+learn+final+cut+pro+x In PDF document text
    • https://cdn.sqhk.co/vafegijateno/KoJkZif/first_grade_reading_worksheets.pdfIn PDF document text
    • https://papukelub.weebly.com/uploads/1/3/4/6/134666119/jovunukekirome.pdfIn PDF document text
    • http://shopee24.site/hakurei_reimu_osu_skinyeflm.pdfIn PDF document text
    • http://circulyarkadigital.xyz/100_years_war_religionuzhzc.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/hbUjIgi/blue_apron_coupons_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/iiicgdK/u_mobile_centre_seremban_branch.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/fjh1Iib/karamelupewevu.pdfIn PDF document text
    • https://cdn.sqhk.co/suvotoruwot/jaibUha/nunadurevige.pdfIn PDF document text
    • https://nokafixawawi.weebly.com/uploads/1/3/1/6/131606940/6bbb778ab7c3.pdfIn PDF document text
    • http://look-hotel.com/cookie_sheet_chicken_dinners6isyk.pdfIn PDF document text
    • http://formblckr1.xyz/the_universe_next_doorvtaxb.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/gozilum/vefur.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/football_mania_app.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/encyclopdie_politique_franaise.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/cleapss_safety_sheets_sodium_hydroxide.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_off0000d3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C9 4952 bytes
SHA-256: d68a3e7df2cd155a171562bc1093267446f42ebc5d2dad86c5a872d9c3bbd7c1
font_01_sfnt_off0000e4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 10584 bytes
SHA-256: 86d7a6550b8544fe9f4c44676824e0de610c0a8dbcf45ddf839961847602c595

Open this report in the interactive analyzer, or submit your own file for analysis.