Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ad17d021cac1df…

MALICIOUS

PDF

77.5 KB Created: 2021-03-09 10:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c517aee348a9ccaffb8e450feda02b7b SHA-1: 7446b6180650d934471bdebe21ddba1f99cea5f4 SHA-256: 60ad17d021cac1dff5012d5991d3204838841774775a70353fcb5b65cba5e599
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF contains numerous external URIs and a heuristic firing for a 'download button' lure, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the embedded URLs are the primary indicators of compromise, likely leading to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/award?keyword=international+laundry+symbols+pdf PDF link annotation
    • http://bukuvud.22web.org/anarchy_online_guide_2017.pdfIn PDF document text
    • http://fafikup.scienceontheweb.net/best_financial_books_for_beginners.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/93964952821.pdfIn PDF document text
    • http://hookup153.fun/77135524640rk410.pdfIn PDF document text
    • http://dufifudusimube.mygamesonline.org/sail_race_rules.pdfIn PDF document text
    • http://gojazot.22web.org/gezebosumemafe.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/calculo_estructural_ingenieria_civil.pdfIn PDF document text
    • http://helpverifybadges.com/best_pressure_cooker_air_fryer_in_oneus1v5.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/55383707566.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/dorian_gray_book_cover.pdfIn PDF document text
    • http://nazevulilabume.66ghz.com/81701287423.pdfIn PDF document text
    • http://tubujagowip.iblogger.org/mapa_asia_fisico.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/voltage_divider_bias_circuit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mekasesajiw.onlinewebshop.net/72635940545.pdfIn PDF document text
    • http://gobofitis.epizy.com/advanced_mathematics_problems_and_solutions.pdfIn PDF document text
    • http://ketonabewuzove.epizy.com/53879673044.pdfIn PDF document text
    • http://furugavasipif.epizy.com/briggs_and_stratton_engine_manual.pdfIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/sistema_mexicano_de_alimentos_equivalentes_2019.pdfIn PDF document text
    • http://rokusagotigenov.rf.gd/computer_institute_admission_form_format_in_word.pdfIn PDF document text
    • http://pugobafujopelat.epizy.com/babuxipa.pdfIn PDF document text
    • http://pisubuxave.rf.gd/dalum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 5248 bytes
SHA-256: de72f4b9a2d37ea6c77f39ced335840fff970e8241aad4b2fc554e957176d394
font_01_sfnt_off0000f780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 10276 bytes
SHA-256: 77f13449f9f88503f9000eb79603bd52f4cd1c0495861de811b008423b5d92a7
font_02_sfnt_off00011aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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