Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9729a412d3b172…

MALICIOUS

PDF

89.8 KB Created: 2021-04-01 02:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af8b7cbff46ae2c09808cbc794daa63 SHA-1: 224711c82e7e69a0363dfff4b7c808d159e70e7c SHA-256: 8f9729a412d3b17223bb12606001a14f63c4478095af63992f0005629e39fa9d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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/wix?keyword=devil%2527s+arithmetic+summary+chapter+4
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5ff5b521ed1e8.pdf
    • https://cdn.sqhk.co/rotelizedo/hehbgjh/iceland_groceries_online_shopping_uk.pdf
    • https://cdn-cms.f-static.net/uploads/4449616/normal_6052045bb760a.pdf
    • https://cdn-cms.f-static.net/uploads/4393193/normal_602d0fb344fae.pdf
    • https://static.s123-cdn-static.com/uploads/4365626/normal_5ff3125e8ca20.pdf
    • https://cdn.sqhk.co/janawezexoj/Mhh1jgt/39335819877.pdf
    • http://zusagukitu.mywebcommunity.org/bugazaduz.pdf
    • http://gedirobidepud.scienceontheweb.net/diretudova.pdf
    • https://cdn.sqhk.co/vasegodesazu/4Pghgfl/78410588471.pdf
    • http://noxopadorilu.iblogger.org/gujisinetogixixubuzajed.pdf
    • http://dasopifumos.iblogger.org/calculating_volume_and_density_worksheets.pdf
    • https://static.s123-cdn-static.com/uploads/4461497/normal_5fe4b8011e892.pdf
    • http://dobofozepop.mygamesonline.org/elementary_linear_algebra_a_matrix_approach_student_solution_manual.pdf
    • http://tixesikixux.mygamesonline.org/mean_from_a_frequency_table_exam_questions.pdf
    • https://cdn-cms.f-static.net/uploads/4388428/normal_604a17dc2040f.pdf
    • https://cdn-cms.f-static.net/uploads/4476593/normal_603f79d97f510.pdf
    • https://static.s123-cdn-static.com/uploads/4460471/normal_5ff016ac32fcd.pdf
    • https://cdn.sqhk.co/vavetiset/QHEhbQ6/63743393557.pdf
    • https://cdn.sqhk.co/xokipuxat/chfP9Nj/gamofuxolipuja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fubulojanuleze.epizy.com/jipazewulipubukababedovu.pdf
    • http://tososite.onlinewebshop.net/over_the_rainbow_original_singer.pdf
    • http://jaxojuruwak.rf.gd/5224133418.pdf
    • http://jafixomedimun.onlinewebshop.net/totixifezefalafolezorutit.pdf
    • http://luvetux.myartsonline.com/28278790552.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_off00011f84.bin
6012817c815830f655ff4ade016d4994b1383f1b0a2e34aa20a58631e87ce87d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F84 5456 bytes
font_01_sfnt_off0001320c.bin
4abb0b20def0813ab81f5f70227fc8e0dbaa7d50864ccf493c6e73d11b3b123e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1320C 10972 bytes

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