Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d22d3a233e4df0…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 15:28:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 66d5edfc3abbe70b281f6da425d76168 SHA-1: b0ad6feba75877085592b75fce7bc55ef8d0b17c SHA-256: 12d22d3a233e4df001b6e38c67a1620cafdf9a1bf9047426ef545bfe7fe23e29
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it is a phishing trojan. An external URI pointing to 'midufefew.ru' was extracted, which is highly suspicious. The PDF structure and embedded content suggest it is designed to trick users into visiting this malicious URL, likely as part of a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/award?keyword=what+games+are+in+the+atari+flashback+8 PDF link annotation
    • https://cdn.sqhk.co/tefivezik/hiihfL6/tibosolikekimijerozodin.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/similarities_between_impressionism_and_expressionism_art.pdfIn PDF document text
    • http://pc-remont.website/how_many_calories_in_an_oat_milk_iced_coffeery7jp.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/boston_market_chicken_pot_pie_calories.pdfIn PDF document text
    • http://starconflict-game.ru/71169870813p7p0a.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuwajavi/iPQhfcI/96032829019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/luropi/cast_sql_date_format_mm_dd_yyyy.pdfIn PDF document text
    • http://pulawev.epizy.com/jeopardy_rules_for_answering.pdfIn PDF document text
    • http://gewofudi.rf.gd/dangling_participle_worksheet.pdfIn PDF document text
    • http://sexusig.rf.gd/bodhi_linux_legacy.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/intel_high_definition_audio_driver_windows_10_download_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/fewurafefowanurina.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/dekefifevutopase.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE099 5708 bytes
SHA-256: 0dc7fae63e1d7ea60ed1d4b85f48c45cc1ff37b44bb31dc2bd5a4468daafdef0
font_01_sfnt_off0000f3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3ED 10368 bytes
SHA-256: ef443e619e95e72f6be14e288036b079573d51aa715c4ffa89f1b48341258e04