Malicious PDF — malware analysis report

Static analysis result for SHA-256 df91114ca8515b2d…

MALICIOUS

PDF

75.6 KB Created: 2021-04-03 17:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb8fb1ae097b088c82ca05a9ef783a6a SHA-1: 630b5932926210d2f7e41f82b305b831bc5354fb SHA-256: df91114ca8515b2da5d2bb0df649e72f375d3773726b09cf91f56c92d6b5bf1e
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/wix?keyword=1995+jeep+grand+cherokee+fuse+box+location
    • http://sizinepizot.scienceontheweb.net/4118693024.pdf
    • http://vinuporabomod.iblogger.org/miya_bhai_hyderabadi_song_ming.pdf
    • http://eeeeeyyy.space/go_rack_dbx_manual_espaol4rsuu.pdf
    • http://superheatbelt.xyz/vegafifulror65.pdf
    • http://it50disconto.info/47725904843nfjjx.pdf
    • http://bred-enligne.com/percy_jackson_and_the_olympians_chapter_22_summaryhdb5f.pdf
    • http://lebizifijafaxim.medianewsonline.com/de_que_se_trata_la_obra_cien_aos_de_soledad_resumen.pdf
    • http://ludexeliviw.22web.org/xaxagipezesazuxibidas.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_22a1da8a2bbd40c399910424b535c440.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6f730634-363a-4917-8666-0f5787b27100/what_is_the_law_of_summary_judgment.pdf
    • http://bidusibebawuz.onlinewebshop.net/69805060864.pdf
    • https://uploads.strikinglycdn.com/files/d2d46729-c7be-4320-80ad-0d999ba06716/fonofuzorur.pdf
    • http://xowitulodif.rf.gd/62528210395.pdf
    • http://dapizodipe.myartsonline.com/what_are_birthdays_really_about.pdf
    • https://uploads.strikinglycdn.com/files/8d5e5198-1afd-485f-a37a-bf09bd61f22d/108_mudras.pdf
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_4a563c1cc77f43d8a1adeb74f859fc86.pdf?index=true
    • https://uploads.strikinglycdn.com/files/45dc585b-5cb1-4437-959f-cc9955d5c957/reading_strategies_for_high_school_social_studies.pdf
    • https://0bc2ebcf-5b85-435c-8290-6c6350a165f2.filesusr.com/ugd/ee98f5_a6e367284dcb48a1b00125ee9572e46e.pdf?index=true
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_c997057fe0b24f7f8cecc98b48a26430.pdf?index=true
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_1b083c05289948b9a68ad69bac567553.pdf?index=true
    • http://nizofikunatafu.atwebpages.com/51195281656.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_off0000e83a.bin
1fba221868837f3668c803f73471e9944886617aa620337eb6b4bbe78bce987e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE83A 6004 bytes
font_01_sfnt_off0000fcb4.bin
977d0feb5cb5e385053c6c74d761d792b3239c10678b48a43b1228b521066450		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB4 10552 bytes

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