Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a08be7cdf65a7ca…

MALICIOUS

PDF

92.2 KB Created: 2021-04-30 17:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0e8be28917fa6481e092a1d5e5b8b76c SHA-1: e195f8aad024af31d42a170ed4ff5912c194c13c SHA-256: 2a08be7cdf65a7caac94512d59c8586ef192cce33709404cece1d3a2cf7e55b8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=data+science+internship+salary PDF link annotation
    • https://cdn.sqhk.co/lebudawojafi/nYrgcgh/microsoft_to_do_list_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/D8hj8ih/hepatic_portal_vein_collects_blood_from.pdfIn PDF document text
    • http://accueilcmb.com/velodiwejododogef530a.pdfIn PDF document text
    • http://usesoda.pro/385069859472erea.pdfIn PDF document text
    • http://xbet1.fun/honeywell_rth230b_thermostat_operating_manualfduy0.pdfIn PDF document text
    • https://cdn.sqhk.co/bijozugetav/hhj7gfb/jungle_adventure_nyc_whitestone_ny_11357.pdfIn PDF document text
    • http://zajiledafalam.getenjoyment.net/37765980435.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/ahcgjit/dikufopasafafu.pdfIn PDF document text
    • https://cdn.sqhk.co/burexewejam/ihhc1gg/stacking_lithium_ion_batteries_recycling.pdfIn PDF document text
    • http://pc-remont.website/buvujuropaf9k8j.pdfIn PDF document text
    • http://mufosozewolofar.iblogger.org/47167313097.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gojaxuga.epizy.com/common_antibiotics.pdfIn PDF document text
    • http://tejinumifed.epizy.com/75932074342.pdfIn PDF document text
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_d81526788f7f4909aa216edd2b06d91c.pdf?index=trueIn PDF document text
    • http://vuwadiwotaja.rf.gd/raxunamanuzov.pdfIn PDF document text
    • http://foliminuga.epizy.com/wadutadamigefo.pdfIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_4eb1842a5b934abba520ef534c6cd669.pdf?index=trueIn PDF document text
    • http://kuvevepakamobo.epizy.com/89982396299.pdfIn PDF document text
    • http://modunatotuw.epizy.com/google_chrome_for_pc_free_cnet.pdfIn PDF document text
    • http://tiwogiponifi.rf.gd/cadila_healthcare_annual_report_2012-_13.pdfIn PDF document text
    • http://pezomovororiz.rf.gd/75568738187.pdfIn PDF document text
    • https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_5084b31a8fc34001905931b765839b9e.pdf?index=trueIn PDF document text
    • http://xepuzakudera.atwebpages.com/fipolomi.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53A 5124 bytes
SHA-256: a74ce9b74275d6853e3cec49e6f522430e6cd4cf1a03ee2afcb15879d83f0554
font_01_sfnt_off000106ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AE 3852 bytes
SHA-256: fb9a9d6d956734aafa617145bc4294d680f35380ebfe4cccb0c41768ced05ec5
font_02_sfnt_off000112a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A6 3980 bytes
SHA-256: a313e22387c7e4b9749988dc41ee1aa3dd5931941e4c1c19769d44b9562f5cf0
font_03_sfnt_off00011e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9A 13236 bytes
SHA-256: 9a17729a9a5639addb36734209d7815fb2062b8c3bb57014ce5b44ccdc5c64bf
font_04_sfnt_off00014bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC8 16520 bytes
SHA-256: 45d9bd2a21e8c0d01ce85edcab7818fc294645a32186b120649f468d4ae65b9f

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