Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83efa3e090a3cc3…

MALICIOUS

PDF

70.2 KB Created: 2021-03-02 02:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 5aa998263092554ab237a3d1de2c81a4 SHA-1: bc0a7715efc5e4cb74e483f01c7b0dce37499707 SHA-256: e83efa3e090a3cc3bdbf2994df34af31c89114b02a279fd49ba175ff42f67c2c
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, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious redirection tactics.

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 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://vilenefex.ru/wix?keyword=boom+boom+ain%2527t+it+great+to+be+crazy+disney PDF link annotation
    • https://cdn.sqhk.co/gegojagakexu/jGcqgc8/black_desert_mobile_warrior_awakening_class.pdfIn PDF document text
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/9116551.pdfIn PDF document text
    • http://lozavisimas.22web.org/vio-_lence_oppressing_the_masses.pdfIn PDF document text
    • http://bipasuvuf.iblogger.org/square_d_water_pressure_switch_wiring_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/lumozupa/jbjbgid/lewazozurolobodupawijegax.pdfIn PDF document text
    • https://lokulubebu.weebly.com/uploads/1/3/1/8/131856352/2d66bc324.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/iBvIMji/spacex_launch_live_bbc_news.pdfIn PDF document text
    • http://durukogemegaxib.22web.org/72464374109.pdfIn PDF document text
    • http://wizomokupelew.iblogger.org/collateral_warranty_template_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/aCjcUhi/47145185819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fakefujakarip.rf.gd/free_bitcoin_miner_app.pdfIn PDF document text
    • http://fozikabev.epizy.com/c_d_performance_mansfield.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/cm_crockett_park_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/pizadunedikotizukol.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/45560972368.pdfIn PDF document text
    • http://nopexuwub.rf.gd/kevikeboguluvuwemetofub.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_off0000d82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82C 5600 bytes
SHA-256: 2313e7daf931444c30cf52afe1a415bc06a582d28f3dc9a17851af295e1d4c3a
font_01_sfnt_off0000eb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 9552 bytes
SHA-256: ae554b04a38d53e9426076dc8e8718f279d59d59a096dacf95ccfe14dfbf7a50

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