Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb44ec1ca9bc330…

MALICIOUS

PDF

71.5 KB Created: 2021-02-27 00:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 898656dd32612deaf0ebfc690fa2acdc SHA-1: aef5cad22d7773c3e97de92636e7d79ce7f6c21a SHA-256: 1cb44ec1ca9bc330a24cd86b4efb6cda069f32c7933d07f138d081a04c042a72
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing or malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious resource, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://nipisod.ru/123?utm_term=liftmaster+professional+formula+1+model+number
    • http://biteroz.iblogger.org/firefox_48.0.2_32_bit.pdf
    • http://jojuvumunejo.iblogger.org/zevedajigiditukuxosajeg.pdf
    • http://jopimutedu.iblogger.org/united_technologies_annual_report_2009.pdf
    • https://lefesime.weebly.com/uploads/1/3/4/8/134882546/rarepavubefijuzijej.pdf
    • https://lurenosofen.weebly.com/uploads/1/3/0/7/130740325/nipoxigemiwizun.pdf
    • https://govabegos.weebly.com/uploads/1/3/4/0/134018252/masigoxoropup_soliraxef_guruxipifati_muvexepep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gefuxexo.epizy.com/sheetrock_screws_per_pound.pdf
    • https://s3.amazonaws.com/gezetega/transformers_prime_optimus_prime_x_megatron_fanfiction.pdf
    • http://samanoniminowut.epizy.com/nokia_3._1_android_one_case.pdf
    • http://vukigopi.rf.gd/encyclopedic_dictionary_of_applied_geophysics.pdf
    • http://wisunomimat.epizy.com/64394629774.pdf
    • http://dibixobijowib.rf.gd/breville_juice_fountain_cold_juicer_recipes.pdf
    • https://s3.amazonaws.com/doxifuba/clair_de_lune_piano_easy_sheet_music.pdf
    • http://nolexaguluzu.epizy.com/black_and_tan_mini_dachshund_for_sale.pdf
    • http://vemusimovoxodan.rf.gd/popitotemorolad.pdf
    • http://sebipukavore.epizy.com/cash_flow_statement_notes.pdf
    • https://s3.amazonaws.com/tidigudetefumof/83088882769.pdf
    • http://midusetoz.epizy.com/retalubuwigoba.pdf
    • http://sosefaxerutujax.rf.gd/0_1_format_python.pdf
    • http://sidegiri.epizy.com/motorola_pager_instruction_manual.pdf
    • http://sumafalonedap.rf.gd/onkyo_tx-nr616_bluetooth_setup.pdf
    • https://s3.amazonaws.com/ladojenefe/wuwurulanidesosebujoba.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_off0000db8d.bin
da512714aeefbf3324bc3737f18b563ed14749f5b0a39668f8fffd1f906d7938		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8D 5320 bytes
font_01_sfnt_off0000ed89.bin
413b5efa70ac64b6870f624e84a3e2169883e3a4553a99a80820d297176859cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 10132 bytes

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