PDF malware analysis — malicious · bdff9ab8965d042d

MALICIOUS

PDF

79.4 KB Created: 2021-03-20 07:05:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 45aff1a0a2f7284405e2baa361b1a3ae SHA-1: b7f2034a3a8b9b51404ed6a5aa15bdcaa8548b19 SHA-256: bdff9ab8965d042d3903d083b199c67d939a996749ec44c507c20c853b58116e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing multiple embedded URLs, with the primary one being https://nipisod.ru/award?keyword=amartya+sen+development+as+freedom+free+pdf. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URIs suggest a lure to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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://nipisod.ru/award?keyword=amartya+sen+development+as+freedom+free+pdf
- http://ranomurivokav.22web.org/sexujikosozofekibewabu.pdf
- https://cdn.sqhk.co/sesexibanobu/ihgg8gf/money_bag_claw_machine_near_me.pdf
- https://cdn.sqhk.co/xasakeza/SigJiej/gisariwop.pdf
- https://cdn-cms.f-static.net/uploads/4390052/normal_604649d68c18a.pdf
- https://cdn.sqhk.co/jivazufevi/kA90jgj/tubing_helen_ga_prices.pdf
- http://xevimajitufom.iblogger.org/piwuzi.pdf
- https://cdn-cms.f-static.net/uploads/4410722/normal_604e32f0d6561.pdf
- http://beririka.scienceontheweb.net/who_moved_my_cheese_quotes.pdf
- http://vasetar.iblogger.org/wagner_915_power_steamer_home_depot.pdf
- http://sevezor.scienceontheweb.net/how_to_send_score_reports_gre.pdf
- http://zawugudumi.getenjoyment.net/3458750704.pdf
- https://cdn.sqhk.co/wibezudak/dNeSigS/siberian_tiger_vs_grizzly_bear_size.pdf
- https://cdn.sqhk.co/verexoleki/ehiIiiF/pigetusofokalinel.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/zetubakuz/how_to_use_the_fill_tool_in_procreate_pocket.pdf
- http://wedagavuvux.epizy.com/nuxodadekiwinoxo.pdf
- http://tuxiwifu.rf.gd/beginners_guide_to_wearing_makeup.pdf
- https://s3.amazonaws.com/lorugipopuxe/metabolism_process.pdf
- http://mexokibalu.epizy.com/yamaha_rx_740_manual.pdf
- https://s3.amazonaws.com/satulibaren/gutusotata.pdf
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f81d.bin` `4a815e1912ff20467274c3d2ec358a369a7d28fa7c402b092f10654704157b41`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF81D	5340 bytes
`font_01_sfnt_off00010a3b.bin` `2dd327c4e94e31cdd5012373e68c4daba86141b2bf5a8f4ac4a35371e8a15b1d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A3B	10556 bytes

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