Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7dd36959c65a3ec…

MALICIOUS

PDF

71.8 KB Created: 2021-02-27 12:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 926418646ce4a00fda181cdb1929912d SHA-1: f8fe1a368131b37ccb6104f6a4ec951ecf6115d8 SHA-256: a7dd36959c65a3ec3cb15439aae0107626b7e7c0c1e4c3f866d97e18cd615aa8
126 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
  • 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.
  • 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://bologen.ru/wix?keyword=cell+analogy+worksheet+key PDF link annotation
    • https://geputugu.weebly.com/uploads/1/3/5/3/135311163/zuterarapumijunotov.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/qxjcNjh/zombie_roadkill_3d_game_download.pdfIn PDF document text
    • http://rimelutafoterir.iblogger.org/pajagejovibitiwor.pdfIn PDF document text
    • https://vilawamilufulob.weebly.com/uploads/1/3/6/0/136006615/4686184.pdfIn PDF document text
    • https://peziwotikiju.weebly.com/uploads/1/3/4/6/134602895/257f6f35d60c.pdfIn PDF document text
    • https://lafadulow.weebly.com/uploads/1/3/4/5/134591129/1713695.pdfIn PDF document text
    • http://tertov.xyz/94258454888kma3y.pdfIn PDF document text
    • http://trastqort.online/tabotaxovmxhl.pdfIn PDF document text
    • http://leadtop.co/xunozizoroh4ea.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/jbl_flip_3_connecting_bluetooth.pdfIn PDF document text
    • http://newapegujopabi.22web.org/i_robot_book_summary_sparknotes.pdfIn PDF document text
    • http://sijemogezabusa.sportsontheweb.net/laxemoxeje.pdfIn PDF document text
    • http://mscgis.net/song_chineke_ka_by_salvation_ministryyesj4.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/lolijexejomak/how_to_fix_audio_delay_on_sound_bar.pdfIn PDF document text
    • http://jupexalamax.epizy.com/declarative_sentences_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/animania_ios_apk.pdfIn PDF document text
    • http://vepunip.rf.gd/fuxasorufeno.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/cpse_2016_prelims_answer_key.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/soleus_air_70_pint_dehumidifier_not_working.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_off0000de66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE66 5112 bytes
SHA-256: f001f6d354ae7d99d3c59216d3fa93c3e204ab5df26a709bf416ec9a3ddbae1e
font_01_sfnt_off0000efdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDB 10008 bytes
SHA-256: 0742c35e4cede1423be6cd88200ff5c48ea3856d714b1556e9dba13208e24d1e