Malicious PDF — malware analysis report

Static analysis result for SHA-256 b55235f202db7998…

MALICIOUS

PDF

253.2 KB Created: 2021-02-19 11:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 49c373535ade90434541e29877ec755a SHA-1: 0cbad0c4c69bde2cf7e1e94e456ec0ff57cf37a4 SHA-256: b55235f202db7998e7a2c77a0f301cd75d939526bead1ab935f916cd357c49f3
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded content, though heavily obfuscated, appears to be a lure related to 'Divina comedia infierno resumen por cantos'. No scripts were extracted, but the presence of a malicious link and ML classification strongly suggests a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=divina+comedia+infierno+resumen+por+cantos In PDF document text
    • https://cdn.sqhk.co/tukawezezo/chj0Oig/amtrak_route_from_florida_to_virginia.pdfIn PDF document text
    • https://cdn.sqhk.co/wumidimux/UsSsihv/nethack_tiles_download.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/tudoxobupofalam.pdfIn PDF document text
    • https://vebusigatibata.weebly.com/uploads/1/3/4/3/134321359/kazobelusudodij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_60058c975e630.pdfIn PDF document text
    • https://cdn.sqhk.co/powitaxixu/qfijZhE/sandwich_in_spanish_spain.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465538/normal_601b8d2372f32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479938/normal_5feb87949fc16.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/Z9ie5gh/dagukefofele.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454436/normal_5fe152265bd5d.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/jEjfZgZ/gseb_online_learning_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5ffcbb194a421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403951/normal_5feba62e79878.pdfIn PDF document text
    • https://legukofa.weebly.com/uploads/1/3/5/3/135318177/tuzabokude-marokijagi-motererugarewew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374689/normal_5ffd3077a11c3.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/fajeloninesitel/32419334494.pdfIn PDF document text
    • http://monigadukuze.rf.gd/sat_subject_test_what_is_a_good_score.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/counterexample_worksheet.pdfIn PDF document text
    • http://lojuwuwa.rf.gd/kowisovunibodukejiritufev.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0003b3a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3B3A8 27408 bytes
SHA-256: 4cd0594135605274d55fa584dd359b0b10700ad1fff1b7026977b9c3beead847
font_00_sfnt_off00034c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C05 11284 bytes
SHA-256: d4eaa86bf3cc2b93b4611a789b4ecd376d90274c23cad9186412d2c8befd6f33
font_01_sfnt_off00037107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37107 5328 bytes
SHA-256: 9b1642060bc2c449c19abbf750f77804518919117a5e70014598ea217251cffc
font_02_sfnt_off00038325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38325 15296 bytes
SHA-256: da3767c35243261f802b84a17a504dec79204f4f7fea0e1d572915006bc475d5

Open this report in the interactive analyzer, or submit your own file for analysis.