Malicious PDF — malware analysis report

Static analysis result for SHA-256 b437cd7711a46ee5…

MALICIOUS

PDF

84.9 KB Created: 2021-03-28 22:12:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1dd8dfc2838da754fc7c027431d80374 SHA-1: 67d762f8302800e425f1946d8d45ff63b957e723 SHA-256: b437cd7711a46ee562d2fdf6015d4fed3e8595f1e5fcc0f6d54d1eb325cafbc5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malware or providing sensitive information. No scripts were extracted, but the presence of a suspicious URL is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/award?keyword=reaktionsgleichung+aufstellen+%25C3%25BCbungen+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489429/normal_5fda309085ab9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467325/normal_5feb6f8029a14.pdfIn PDF document text
    • http://nalowisep.22web.org/audit_report_contents_and_types.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487431/normal_6041b02036bbe.pdfIn PDF document text
    • http://xujilutobidiko.iblogger.org/tiriletax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_6002e995a8c32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mekamijixakino.epizy.com/adding_and_subtracting_mixed_fractions_worksheet_with_answers.pdfIn PDF document text
    • http://kiwutixukunow.epizy.com/10211329819.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/dokovularelimomituniri.pdfIn PDF document text
    • http://zawofepak.epizy.com/aquiles_historia.pdfIn PDF document text
    • http://wigazimo.epizy.com/domiberuzanixuzitupabe.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/bacteriologia_basica.pdfIn PDF document text
    • http://nejexapef.rf.gd/craftsman_16-gallon_shop_vac_filter_lowes.pdfIn PDF document text
    • http://nagikesedogoru.rf.gd/51912125218.pdfIn PDF document text
    • http://gokojap.epizy.com/zuzivesuxoguvenu.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/57404152960.pdfIn PDF document text
    • http://limirosu.rf.gd/berliner_platz_4_neu_b2.pdfIn PDF document text
    • http://favirivesez.epizy.com/54226689305.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/3533284773.pdfIn PDF document text
    • http://sosozodazu.epizy.com/dufilogejak.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/66453888208.pdfIn PDF document text
    • http://jizemefuzix.epizy.com/airtel_night_plan.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 5532 bytes
SHA-256: 382487f25fc1cdd1274766655503d23f6f5620377b0e39c605d015a52fd6e415
font_01_sfnt_off0000fa0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0D 11580 bytes
SHA-256: c9116922e76042a1f00ec958945d68d0834fd983c5c59dfa40a1d260199e223f
font_02_sfnt_off000120b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B0 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90
font_03_sfnt_off00013547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13547 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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