Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a611d1c233e1454…

MALICIOUS

PDF

81.2 KB Created: 2021-03-21 01:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7951f4b351807196072a013dc0c22a0e SHA-1: 77685f493d860f2ddda2510dcf88936d938545bd SHA-256: 3a611d1c233e1454e28d447487f03e12e53d151ed4ecfd58657779e815727bb6
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged it with high confidence. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jacksth.ru/wix?keyword=chemists+celebrate+earth+week+2020
    • http://vknacruckalaikov123.xyz/appreciation_of_the_poem_my_grandmothers_house_by_kamala_daskv3qq.pdf
    • http://help-business-media.com/samejabowmj4h.pdf
    • http://twenty-promo2020.ru/basulagetisisopativabarwzrc1.pdf
    • http://domavera.ru/red_herring_prospectus_example7mtb4.pdf
    • https://cdn.sqhk.co/nivipanevi/jiwjj5m/84790837382.pdf
    • http://giftcard-sale.store/2012_impala_ltz_oil_capacityhv3o8.pdf
    • http://biomaniix.website/91158100775uq3o5.pdf
    • http://it50disconto.info/bombardier_transportation_uk_ltd_annual_report1re9x.pdf
    • https://cdn.sqhk.co/jegamaxegev/ghdFjja/xikezolebexupo.pdf
    • https://cdn.sqhk.co/zipirevofu/dhfLgeM/clash_royale_clan_wars_2_release_date_time.pdf
    • http://digtalcaliper09.xyz/wolujofan10wwr.pdf
    • http://mailedflkf.site/xeduzuxofe9tm08.pdf
    • http://smartcoin.design/wolfteam_kayt_ol_indir_oynaefg4w.pdf
    • https://cdn.sqhk.co/guwuweri/ahjZaia/jatuzadegunolis.pdf
    • https://cdn.sqhk.co/dasoxitif/JRggkg0/old_arcade_classic_retro_video_game_console.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/26a29355-2c41-4e57-a08b-0dc3aea4568e/64419815875.pdf
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_0def5e0abc1245569499766ba0f6ba11.pdf?index=true
    • https://uploads.strikinglycdn.com/files/70b1674f-2ee5-4a01-94f7-ca3fad782e01/how_do_i_love_thee_meaning.pdf
    • https://74a5c9af-61bb-4d76-9351-4d02c0bf652a.filesusr.com/ugd/e33828_7765c333884c48b8baf7adb34c28c184.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e4fdf89b-6339-4d38-92b0-0ec78c80b847/how_to_mix_cyan_blue_paint.pdf
    • https://uploads.strikinglycdn.com/files/fe8a56a9-b770-477e-b455-95ce0bdb975b/is_genius_genetic.pdf
    • https://uploads.strikinglycdn.com/files/a9b555c2-c2ab-4e15-9831-c0023551d7d2/tojodevanizupepe.pdf
    • https://6d23287f-a15b-43b7-8d69-700c0e01f504.filesusr.com/ugd/185c00_abe31705e624424f88df80b0e65d49d3.pdf?index=true
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_aed53bfc4dd14c38918dd006c16a8198.pdf?index=true
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_d80e0367352c468784340f05a289ede7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef4a.bin
3760aad72486f1a9142147a254fca7a5d05a235620e9ddb16bb7306b307c3016		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4A 5204 bytes
font_01_sfnt_off00010104.bin
8d289a8d7565eb71c85db497125ddc9c3e62c37b290830f3c488ca3b6472fa14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10104 11412 bytes
font_02_sfnt_off00012794.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12794 4324 bytes

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