Malicious PDF — malware analysis report

Static analysis result for SHA-256 3128b9a619ac24ad…

MALICIOUS

PDF

80.4 KB Created: 2021-03-15 04:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4a691eaf9986cc0f9a88d1b0bf52eeb SHA-1: 7611cf82bdaca318ad2e3414c63499c57ce38dda SHA-256: 3128b9a619ac24adb6162875cf35e2ff63bb1d43b4008e0644d4801ecb068fcb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'student success skills' and the file contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of external links and the nature of the heuristics suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/wix?keyword=student+success+skills+list
    • https://cdn.sqhk.co/migazajigum/gaaianE/foworogij.pdf
    • http://fanilobepewe.sportsontheweb.net/55178366999.pdf
    • http://damvglaz0.xyz/kagarenupawuruliduwodubm6dds.pdf
    • https://cdn.sqhk.co/worenora/9jdjhie/deus_ex_good_cop_bad_cop.pdf
    • https://cdn.sqhk.co/fezifoxunif/JQhaCig/retro_fridge_for_sale_brisbane.pdf
    • http://hardcreditcheck.info/896687081411w5c3.pdf
    • http://naturelofo.mypressonline.com/online_travel_agency_industry_analysis.pdf
    • http://nijaxubazaziw.mypressonline.com/4721908339.pdf
    • http://atomyimperial.ru/78767120811ahjn2.pdf
    • https://cdn.sqhk.co/kugefiruxat/icqjj5M/rokadosataririzugofuzevu.pdf
    • http://gakmancreatures.ru/goal_zero_flip_24_power_bank_reviewjkd78.pdf
    • http://indonesia2health.online/anbanavan_asaradhavan_adangadhavan_songs_freeso73d.pdf
    • http://ronebiwoti.22web.org/gk_questions_and_answers_in_telugu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zevutebulaworel/12481731037.pdf
    • https://s3.amazonaws.com/ximupuv/why_is_my_bissell_vacuum_not_turning_on.pdf
    • https://s3.amazonaws.com/wutezigojuxi/xetawovojafirosi.pdf
    • http://xizoxenefodage.epizy.com/25460834546.pdf
    • https://s3.amazonaws.com/jokotaziweluge/54729817739.pdf
    • https://s3.amazonaws.com/zamuriza/borderlands_2_limited_edition_strategy_guide.pdf
    • https://s3.amazonaws.com/vunizi/76736390833.pdf
    • https://s3.amazonaws.com/mokuwanibof/bakaline.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f316.bin
7628e9ba1dd6b481ffba67774b90c4244d2ed9fd3d4f36f623a43b03af4a0757		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF316 4564 bytes
font_01_sfnt_off000102a6.bin
37345439126d56e2f0dfd6da3a3e50a61df4dc69891e2e4bc669e25010a96e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102A6 10480 bytes
font_02_sfnt_off00012645.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12645 4324 bytes

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