Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5227c74eaba469…

MALICIOUS

PDF

76.2 KB Created: 2021-03-15 08:29:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 220556fc84b7e04210b18746431d7392 SHA-1: d597d558be35646a56489377d251d390128d2da4 SHA-256: dc5227c74eaba469a319f5375de7ebdd7bb95991bf08cf7821042951e4589a24
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=is+r+easy+to+learn+reddit PDF link annotation
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/xiwawesevi.pdfIn PDF document text
    • http://mitatizizuje.mypressonline.com/brief_summary_of_hamlet.pdfIn PDF document text
    • http://wejaduz.mypressonline.com/fupirugo.pdfIn PDF document text
    • https://cdn.sqhk.co/nepasibuta/gghjDOb/62458551812.pdfIn PDF document text
    • https://cdn.sqhk.co/fusevesapime/rdnOhbO/bekikafiguv.pdfIn PDF document text
    • http://vodabezoli.iblogger.org/video_bts_dna_live.pdfIn PDF document text
    • http://sopidemeleket.mygamesonline.org/xotowu.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/iGhkZtY/xojuxama.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/idiahji/98490484072.pdfIn PDF document text
    • https://remezimivof.weebly.com/uploads/1/3/4/5/134582621/korupinoxasomobud.pdfIn PDF document text
    • http://tekesonisopo.22web.org/gamabovosifinakujisal.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/fWiazRa/92252513003.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/diliro.pdfIn PDF document text
    • http://jiviruke.iblogger.org/kizubowatexuwuxawelezem.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/technical_file_example.pdfIn PDF document text
    • https://wazolupagod.weebly.com/uploads/1/3/0/7/130775763/jujuzidagelato.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dujefukuboxus.epizy.com/50285504438.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/jebuzijuzurixesuwutixiz.pdfIn PDF document text
    • http://momibur.rf.gd/does_arbys_have_waffle_fries.pdfIn PDF document text
    • http://lagokatu.epizy.com/brion_gysin_let_the_mice_in.pdfIn PDF document text
    • http://lutidufewujasa.epizy.com/anaconda_2_movie.pdfIn PDF document text
    • http://naxepedawizozet.onlinewebshop.net/merabareregowuxe.pdfIn PDF document text
    • http://botusijafen.rf.gd/make_text_bold_in_xml_android.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_off0000ed81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED81 4860 bytes
SHA-256: 023e23ebe885a7de1cf9a3768a37c050b9f4275338edf2e4b2afcd0eba84ce55
font_01_sfnt_off0000fe17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE17 10500 bytes
SHA-256: f5dd5c0f8adb2376bdce48a987c2fb606c598e302b8cb7cb8405ecb3e8099490

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