PDF malware analysis — malicious · f71cd4b316891ffd

MALICIOUS

PDF

93.3 KB Created: 2021-03-29 17:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 50476f77b73388a136f1d6b446bdb919 SHA-1: d95bf2de3fedb86bc58c51fd2250c0ad4564a657 SHA-256: f71cd4b316891ffd0c978635757060cd42d930177f22008ad4016b760ad1d38b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or phish for credentials. The document body, though heavily obfuscated, appears to contain metadata related to its creation, but no direct instructions or lures are discernible.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://resalured.ru/wix?keyword=move+day+word+whizzle+answers
- https://cdn.sqhk.co/bedogipaxog/2IghAay/ririzetawukudizasosufipuk.pdf
- https://cdn.sqhk.co/jifegusewe/hehiCfg/52491310578.pdf
- http://nutristrike-shop.ru/gutujeh5sxk.pdf
- http://najetaxu.mygamesonline.org/how_to_get_velocity_vs_time_graph_from_position_vs_time.pdf
- http://udilische.club/instagram_chat_online_on_laptopgdokg.pdf
- https://cdn.sqhk.co/kolokejo/ddbjjhf/dream_city_metropolis_uptodown.pdf
- http://bigijawiv.scienceontheweb.net/the_startup_of_you_audiobook_free_download.pdf
- http://xafesuvorolivig.scienceontheweb.net/sweet_book_of_candy_making.pdf
- https://cdn.sqhk.co/lirebirab/iUwhbmx/lemaguxufeduwamaladatasex.pdf
- https://cdn.sqhk.co/kurazagizub/IjeLdgg/economics_jobs_near_me.pdf
- http://zatutajijiti.getenjoyment.net/jabenofowajeto.pdf
- http://lotupojaxuvutix.mygamesonline.org/axial_flow_fans_and_ducts_wallis.pdf
- http://fumuroruzej.medianewsonline.com/wadagumifogiwuv.pdf
- https://cdn.sqhk.co/lowixadoges/Dbjhia7/world_war_2_timeline_1939.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://kofaxafogi.myartsonline.com/79520480504.pdf
- http://lawesiwewif.onlinewebshop.net/dixakel.pdf
- http://kozogasivufi.myartsonline.com/the_adventures_of_huckleberry_finn_plot_summary.pdf
- http://muwuvago.atwebpages.com/5820672780.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_off000130ec.bin` `de5a8f0292d171c5f73728e66be9b2910cac8eae82972bd68c351fc0e6a3ea34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x130EC	5224 bytes
`font_01_sfnt_off000142d8.bin` `704405ea7c172d25605cfd1e3bf541b97cb5d7ece229fa22345928dbdaf3c447`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x142D8	10444 bytes

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