Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dae1bd65ec02b9b…

MALICIOUS

PDF

100.1 KB Created: 2021-03-14 03:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 03f3b1ba987da8bc46764fc517c3af84 SHA-1: 34168f576bdbd5cb6dabe9ee768bf1b8265925f7 SHA-256: 0dae1bd65ec02b9b2df45f216d11e0324f888e3ce41357ce93f5320766265ec4
186 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many pointing to disposable hosting services, and uses a 'breaking news' lure to direct users to external sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and 'ML_NYX_PDF_MALICIOUS' along with ClamAV detection confirm its malicious nature. The primary intent appears to be directing users to potentially malicious or phishing websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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 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.
  • 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://jottigo.ru/strik?utm_term=breaking+news+trevor+henderson+sightings PDF link annotation
    • https://vopilejuwe.weebly.com/uploads/1/3/1/4/131407469/49bb07a1b77ac2f.pdfIn PDF document text
    • https://cdn.sqhk.co/gufulixofoma/ic3ijha/blank_v_neck_t_shirt_template_free.pdfIn PDF document text
    • https://xevekarisugi.weebly.com/uploads/1/3/4/6/134697334/333023.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/ihAGKii/zombicide_night_of_the_living_dead_rules.pdfIn PDF document text
    • https://xaduxorabirot.weebly.com/uploads/1/3/4/4/134485234/rupid_dukiruwunoli.pdfIn PDF document text
    • https://vugulufubixe.weebly.com/uploads/1/3/5/9/135979185/tewuxesowosuve.pdfIn PDF document text
    • https://rizizisexulap.weebly.com/uploads/1/3/1/4/131407181/diminepazin.pdfIn PDF document text
    • http://ilkertr.shop/rutamopilafavh820.pdfIn PDF document text
    • https://xoburorabusu.weebly.com/uploads/1/3/0/7/130738623/7da7ce49.pdfIn PDF document text
    • https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/solusomoxixolopawaz.pdfIn PDF document text
    • http://update-win20.online/camp_chef_vertical_pellet_smoker_reviewswnbku.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/abT7T3G/tipagokabepofazevugereba.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/egjibjX/xiguxam.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/tornadoes_telstar_mp3xhl8v.pdfIn PDF document text
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/jiwipe_bowazij.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/jc0lhar/never_have_i_ever_show_cast_russia.pdfIn PDF document text
    • https://levavago.weebly.com/uploads/1/3/5/3/135343263/pupilakawaziwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://71347f20-8353-4153-bebc-dd2a28b3a5cf.filesusr.com/ugd/a382ee_a141bc60a0aa4032af50f0c9d41d042e.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_261b77984ee549a18983b42b26faf8da.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/18141fe4-80c6-4664-b7d0-d913351f0131/74362796009.pdfIn PDF document text
    • https://b6e49935-6d58-4bde-831f-6e0b746776d3.filesusr.com/ugd/7d321f_bf0716301bb44254800a1d23e94085af.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba7bc12c-ac64-4077-8c14-a5dc023d2fec/full_symbols_list.pdfIn PDF document text
    • https://aa6d2f86-95e2-42cc-897e-6bbd71c3a116.filesusr.com/ugd/78daac_6df0b974117448079daf74bb73674dc1.pdf?index=trueIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_9d8a58d545f549e98d720c8d6495229f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7579148-8fb5-42b2-8fba-3cc3bfad9c1c/what_size_mattress_does_a_mini_crib_use.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E5B 5320 bytes
SHA-256: fa961b97dda31114933c810146e9bb681906ed34f3fc4629ca32cf63d7fa0e26
font_01_sfnt_off00014089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14089 14288 bytes
SHA-256: 78d0a6303b6933ee86c287d29ec6ec15e60f12ff978d825d263181b82d5bbf33
font_02_sfnt_off00016cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CC7 16232 bytes
SHA-256: b6faa2f92b06497facaf1e43ef8f2011eb39bad0b9d822c48758b8f0c5362295