Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5f2b0beccaa7fa…

MALICIOUS

PDF

79.4 KB Created: 2021-04-29 19:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5287ef6d6aed8db65c424d732ea84c0b SHA-1: 76643b5cb205e0bd56370d264bf965a35585e031 SHA-256: 7d5f2b0beccaa7fa89e91c6198c06e092df581eb19f30b5658f027e61ac2bfa5
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/strik?utm_term=family+tree+blank+charts+printables PDF link annotation
    • http://luxuwum.mypressonline.com/cognitive_behavioral_therapy_techniques_for_substance_abuse.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/98872617562.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/rogidolotodinisewoxuxelaj.pdfIn PDF document text
    • http://biluber.22web.org/lesegisuduwelajimupovapo.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/paxuvagal/90640956451.pdfIn PDF document text
    • http://wozawexopad.epizy.com/pinedesukiwipovorukuvuxuv.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/tajweed_rules_of_the_quran_part_1.pdfIn PDF document text
    • http://zozoresupiz.epizy.com/nabefini.pdfIn PDF document text
    • http://talagolow.rf.gd/wodeborasevuvipemerutolib.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/366434378.pdfIn PDF document text
    • http://jarobifuxoletow.rf.gd/90316371603.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/bariatric_surgery_coding_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/oracle_sql_cast_string_to_datetime.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/intertwined_dodie_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/all_of_me_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/non_right_triangle_word_problems_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/dead_or_alive_5_able_content.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/frosty_the_snowman_2020.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B8 5432 bytes
SHA-256: 285ca20b3f1a0657d3608222a2fa36c000c16f52d601fd1f6a2498a093046229
font_01_sfnt_off0000f710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF710 10480 bytes
SHA-256: a27440b4fac729f9baf7420304fa944492f09aee8869c49289c395197cc92091
font_02_sfnt_off00011afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFA 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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