Malicious PDF — malware analysis report

Static analysis result for SHA-256 f980ec44b68210c8…

MALICIOUS

PDF

75.9 KB Created: 2021-03-02 16:07:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 66b3290d77656a36fb38b8d8bd3db62e SHA-1: daa079f59adf8aef4130b149870761597d25f5d8 SHA-256: f980ec44b68210c8ec642fcc20cc8621b3225d9b2c7dab7930ec9df440d9e9af
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many pointing to S3 buckets, which is characteristic of a link farm used to obscure malicious destinations. One of the primary external URIs, 'https://vilenefex.ru/123?utm_term=the+hunger+games+1+in+hindi+download+filmyzilla', suggests a lure related to popular media downloads. While no scripts were explicitly extracted, the PDF structure and link farm heuristic strongly suggest an attempt to redirect users to malicious content.

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 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.
  • 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://vilenefex.ru/123?utm_term=the+hunger+games+1+in+hindi+download+filmyzilla PDF link annotation
    • http://gixipures.sportsontheweb.net/how_to_clean_black_and_decker_convection_oven.pdfIn PDF document text
    • http://goloszauniver.fun/golden_song_idwokzq.pdfIn PDF document text
    • http://cosmicgig.com/assassin_s_creed_3_dlc_xbox_360woblt.pdfIn PDF document text
    • http://clubstore.info/nozawenunuwewe1eivv.pdfIn PDF document text
    • https://sixixufur.weebly.com/uploads/1/3/2/3/132303163/jagenuxab.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/military_alphabet_abbreviationshmc8a.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/julexekubaj/62467022070.pdfIn PDF document text
    • http://vawirir.atwebpages.com/algebra_nation_online_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/sales_opportunity_analysis_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/define_appendix_in_a_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/negevaka.pdfIn PDF document text
    • http://ropobowex.epizy.com/formulir_klaim_asuransi_kesehatan_axa_mandiri.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/55544203675.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_off0000eb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB41 5564 bytes
SHA-256: 0ceba296dc2a7edadb42206fe7668063159cc895c37a428573bb5711fd72bcfc
font_01_sfnt_off0000fe2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2A 10620 bytes
SHA-256: 90e9843f4c107ebcac2a8886fa4da1fdc7399d75b0e6128b62b2d11b5027ca9e

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