Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b8c232bff4f2f3…

MALICIOUS

PDF

64.0 KB Created: 2021-02-25 16:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e51c15dccdbe2615fbab07309aa42aaf SHA-1: 8f13ae0f788c4b3666487c35a4501e28776e92c0 SHA-256: 86b8c232bff4f2f3d243f28f13d382234115e7a27d63d2657539c51de2c0e91c
182 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics and a machine learning classifier. It contains numerous embedded links, with at least one pointing to a known malicious redirector infrastructure. The PDF's structure and embedded links suggest it is designed to trick users into visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/award?keyword=the+merchant+of+venice+bassanio+character+analysis
    • https://cdn-cms.f-static.net/uploads/4448121/normal_5fd12959462cc.pdf
    • http://pawarelubasiwu.iblogger.org/pickwick_lake_crappie_fishing_report_2018.pdf
    • http://pogawubujogeje.mypressonline.com/madame_butterfly_book.pdf
    • https://static.s123-cdn-static.com/uploads/4417528/normal_5feec62b1f436.pdf
    • http://bumumapa.mypressonline.com/metatox.pdf
    • http://tapozifokun.mywebcommunity.org/how_to_create_custom_register_page_in_wordpress.pdf
    • http://forovasax.medianewsonline.com/microsoft_access_2016_requires_visual_basic_for_applications.pdf
    • https://cdn-cms.f-static.net/uploads/4383132/normal_6025652c76e15.pdf
    • http://xitabijasava.getenjoyment.net/mcgraw_hill_cissp_all-in-one_exam_guide.pdf
    • http://voxemukam.22web.org/24653344450.pdf
    • http://dosijefa.mypressonline.com/bopubemigalozepubub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ronatiduzoxij/types_of_adjectives_worksheets_with_answers.pdf
    • http://nuvofuniwurux.epizy.com/geralds_game_netflix_original.pdf
    • http://puredaw.rf.gd/duvunomenafuli.pdf
    • http://gofirog.epizy.com/vozipavozujaxakixez.pdf
    • https://s3.amazonaws.com/gomaxod/cursive_uppercase_worksheets.pdf
    • http://zudupaxub.myartsonline.com/what_is_the_implication_of_ethics_in_health_and_physical_education.pdf
    • http://fiwusinuba.rf.gd/49917467911.pdf
    • http://nojikigor.myartsonline.com/use_a_geometric_formula_to_evaluate_the_integral_calculator.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2f9.bin
0c489c76be5d63915c138bdabfeb0d10cddc5b9894fcf422ca3095c332b8914c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F9 5160 bytes

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