Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b63e7a61c338b7…

MALICIOUS

PDF

69.1 KB Created: 2021-03-22 21:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dee99735d9df692b24fbbf548acdd21 SHA-1: deed059d5fe91f9c3e8c29f16d9687839ba6b91d SHA-256: f4b63e7a61c338b7bb8603dfcc62bd79831eb6b3022526cee409fe126923a8b0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier returned a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing attack.

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://leonvi.ru/wix?keyword=two+nations+live+on+the+edge+pdf
    • http://iranomics.com/el_diario_de_greg_2_pelicula_completa_en_espaol_repelis1rsn9.pdf
    • https://lokuzovitopoz.weebly.com/uploads/1/3/4/8/134871506/e45e41a287.pdf
    • http://bagerisevi.scienceontheweb.net/gotuderawase.pdf
    • http://classkaod.ru/katy_perry_roar_mp4_songzgpr2.pdf
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/xazasas.pdf
    • https://cdn.sqhk.co/zajagatetode/haifLue/986755155.pdf
    • https://cdn.sqhk.co/nuxowilag/rGZmDhi/sonureluvupizetozuledokub.pdf
    • https://cdn.sqhk.co/bipaneri/jdFdBfq/osrs_minigames_for_low_levels.pdf
    • https://cdn-cms.f-static.net/uploads/4366302/normal_604de992c79cf.pdf
    • https://cdn-cms.f-static.net/uploads/4368760/normal_601e38a4011fc.pdf
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5ff9fef70eca0.pdf
    • http://samemere.mygamesonline.org/canasta_familiar_colombia_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4476015/normal_6003893884838.pdf
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/c0ee83.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4335545e-7536-4dab-9285-1ca2c2a5cdd8/front_page_newspaper_templates_free_download.pdf
    • https://uploads.strikinglycdn.com/files/9e0e2e1c-b03e-497b-957a-c03f30d1b5a9/best_geronimo_stilton_books.pdf
    • https://uploads.strikinglycdn.com/files/2779f4e5-fdd2-418b-bc5a-9962457b7731/wewofetibutipujut.pdf
    • http://ralirajuz.atwebpages.com/how_long_does_it_take_to_get_paid_for_drill.pdf
    • https://uploads.strikinglycdn.com/files/76ad10b0-533f-4028-9fab-ad4589db0af2/investigar_los_tipos_de_medios_de_comunicacin_que_existen.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.

FilenameKindSourceSize
font_00_sfnt_off0000d204.bin
7b8364114be921438c01cd357315f235e5b8dd57e5f68f69d4bbc39cf7fc1fda
pdf-font-stream PDF embedded font (sfnt) at offset 0xD204 5308 bytes
font_01_sfnt_off0000e42c.bin
743b7456bbfcc7530d3affb1330b75d2629d98b4a951d6371fbc0eeed11fed39
pdf-font-stream PDF embedded font (sfnt) at offset 0xE42C 9912 bytes