Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c3eb83199668eff…

MALICIOUS

PDF

80.2 KB Created: 2021-04-01 13:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b57fd762b2d00b9f99698fd972b4ca3 SHA-1: 7b8ce2e81decf93a7d7e0576512397d7ea0b98bb SHA-256: 5c3eb83199668effaaa5b42943d1fa07df8a2a4f3fc2e8754d238a3d05cb5fd0
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains a large number of external links, suggesting a link farm or phishing attempt. The embedded URLs point to various domains, some of which are associated with benign content, but the overall pattern indicates a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/123?utm_term=best+netflix+shows+available+for++2018
    • https://xebuzoxovekig.weebly.com/uploads/1/3/4/0/134018553/2218137.pdf
    • https://nojokuvevufig.weebly.com/uploads/1/3/4/1/134109253/loraponuxoku-vokapibomobudoj-bowavesifi.pdf
    • https://fogisavelubid.weebly.com/uploads/1/3/5/2/135299906/nikukabuk_dezuzuwobasa_fofagixixumin_paxuganug.pdf
    • https://zowadadevifu.weebly.com/uploads/1/3/4/5/134597758/lizovim.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • http://byt-upak.ru/gcse_english_language_paper_1_sample_answers8ymua.pdf
    • https://vubufogos.weebly.com/uploads/1/3/4/7/134766152/560296.pdf
    • http://lidogikezedeba.iblogger.org/9863153447.pdf
    • http://reduslimitalia-official.site/asagao_to_kase-_san_ovarzchc.pdf
    • http://sedaturute.iblogger.org/bakokab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sazitoza.epizy.com/sig_p226_elite_review.pdf
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_7cd95371cc18406a9880cea5fe7d8073.pdf?index=true
    • http://lixoxomowaxane.epizy.com/bangladesh_govt_holiday_calendar_2020.pdf
    • http://betemeparax.rf.gd/nizebeb.pdf
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_869e380308cb40bf8419b4b26547eab8.pdf?index=true
    • http://tadidej.rf.gd/smiologie_de_l_appareil_urinaire.pdf
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_1341448334194759afd87bccdbc67599.pdf?index=true
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_d41b813a6cc04c909689ba7a7176b5bd.pdf?index=true
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_82815efb1be84e26bbbc24eac426114e.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f852.bin
f8da1d099ab1867aaf8154877c8afcf26994a8ff2d4a8a1ee17b82f19415fcc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF852 5784 bytes
font_01_sfnt_off00010c1e.bin
9256711681ed3694cd8eda0abfe097c3dd8d09b2571aab3b758b8e1a8136e5a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C1E 11808 bytes

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