Malicious PDF — malware analysis report

Static analysis result for SHA-256 d362255fade2515c…

MALICIOUS

PDF

64.9 KB Created: 2021-02-11 01:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 13aa7a8cae2ea2df3db4f130aae0440a SHA-1: a78d84dcb810d08f602066299c8d3a397cc1b162 SHA-256: d362255fade2515c9dd8b774fdc1e7df9fb5bb405a65e73b04da177291c4c2ef
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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=kirchhoff%2527+s+current+law+lab+report+conclusion In PDF document text
    • http://1xbets-regs.site/sliding_filament_theory_steps_worksheetfeher.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452395/normal_601e904b73b7b.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/pagib.pdfIn PDF document text
    • http://tevubirufizibun.iblogger.org/jamopiwiveral.pdfIn PDF document text
    • http://zarabatyivat.ru/455362068494d5c2.pdfIn PDF document text
    • http://kleomaften.online/439709524910tg4w.pdfIn PDF document text
    • http://my-favshopd.online/negligee_love_stories_apk_androiddjc5o.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/texalarunat-molewufebiroji-dafol-sifixuroli.pdfIn PDF document text
    • https://denesibupu.weebly.com/uploads/1/3/0/7/130774977/birobilulepa.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/the_crucible_act_1_vocabulary_answer_keyfoys1.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/earth_and_environmental_science_study_guidey35fq.pdfIn PDF document text
    • http://xaxebegolozagu.iblogger.org/autocad_2016_file_size.pdfIn PDF document text
    • http://gedawirij.66ghz.com/beneath_your_beautiful_piano_accompaniment_sheet_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafilijesov.epizy.com/wojapagoja.pdfIn PDF document text
    • http://vekifaxofezawe.epizy.com/adobe_after_effects_text_animation_presets.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_off0000c00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC00D 5336 bytes
SHA-256: 69ba50e42f7009a35d3b7294a7e78c531fa0d57efa9536edf90512e5e8dbf14c
font_01_sfnt_off0000d252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD252 10596 bytes
SHA-256: 57ae0e59366c7639521c6b3094342733790c45202689dc994b4f4a68f67136ad