Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d58ec23ca995e00…

MALICIOUS

PDF

76.9 KB Created: 2021-03-02 15:20:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 05e0e4b3412ca4b5c4d2198c395b8a22 SHA-1: f2501e767dce87dbcbef23febe13b23675064194 SHA-256: 2d58ec23ca995e00ee6c794d0760b05b8e1120d6d0cfafe6babfc1be873d7b3c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://dugedepap.ru/123?utm_term=1136+tenants+case', is likely intended to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/123?utm_term=1136+tenants+case PDF link annotation
    • http://komamoj.22web.org/72388817358.pdfIn PDF document text
    • https://sitoluvumoroge.weebly.com/uploads/1/3/4/7/134762666/bijotipibiwa.pdfIn PDF document text
    • http://xufunuduxatene.iblogger.org/ahe_dayamaya_biswa_bihari_bhajan_song.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/nawosineromigi/butigenawajopeki.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/color_combination_for_website_design.pdfIn PDF document text
    • http://wolaniloko.epizy.com/rigilexewu.pdfIn PDF document text
    • http://luwemazezabubat.rf.gd/telkom_catalogue_august_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/commandos_like_game_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/how_to_define_special_theory_of_relativity.pdfIn PDF document text
    • http://nexizali.epizy.com/69178742990.pdfIn PDF document text
    • http://vopepeto.epizy.com/weekly_lesson_plan_template_elementary_free.pdfIn PDF document text
    • http://vokutenux.epizy.com/xufubirunanagosoti.pdfIn PDF document text
    • http://wawukekaxemiju.epizy.com/zekejogibumikilidibolotiz.pdfIn PDF document text
    • http://mozifawa.rf.gd/viliwatisaxuti.pdfIn PDF document text
    • http://nibimasumexugi.rf.gd/13962833580.pdfIn PDF document text
    • http://renureva.epizy.com/fatofemaxivemewa.pdfIn PDF document text
    • http://tepisivud.epizy.com/bottle_python_template_function.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/pabezuzaloboxorivenanux.pdfIn PDF document text
    • http://povuputuk.epizy.com/possessive_adjectives_exercises_beginner.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_off0000f16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16C 4940 bytes
SHA-256: 74591f65379995d23402d4d4aa92027a6c9b637b674d915ebfe177a4bb5754b7
font_01_sfnt_off0001024e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024E 10632 bytes
SHA-256: 6c7648a6c344d5cfe8ce76bc052f4bdd0cd01ebb26193543af05c939ad34af3c

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