Malicious PDF — malware analysis report

Static analysis result for SHA-256 84909529373ab251…

MALICIOUS

PDF

66.6 KB Created: 2021-03-25 16:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8bf637f4ef7f49a7ab7953953c82afcd SHA-1: 6d39d0d9333202066b12446b573610282bdc5100 SHA-256: 84909529373ab2515584aeb1e4338fd3307be1d08f6c60069598063acf7159fa
182 Risk Score

Malware Insights

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

The file is a PDF that contains numerous embedded URLs, with one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF structure and embedded links suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8274

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.
  • 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://crophysi.ru/strik?utm_term=bow+tie+pasta+and+chicken In PDF document text
    • https://fovubimosifiwu.weebly.com/uploads/1/3/4/3/134324820/6577525.pdfIn PDF document text
    • http://fegubel.iblogger.org/al_quran_bangla_english_arabic_free_download.pdfIn PDF document text
    • http://litowume.22web.org/animal_farm_book_audiobook.pdfIn PDF document text
    • http://fofesivolu.iblogger.org/63656093911.pdfIn PDF document text
    • https://mubuxepuvu.weebly.com/uploads/1/3/1/3/131383429/104a5a82c.pdfIn PDF document text
    • http://dutebolidetol.iblogger.org/30309399744.pdfIn PDF document text
    • http://dovamemowiruz.iblogger.org/wusonizukovapeve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mozutebileba.rf.gd/88666116662.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/sedentarismo_2017.pdfIn PDF document text
    • http://zudosikewemer.epizy.com/32112235958.pdfIn PDF document text
    • http://vamivesuger.epizy.com/jirolidelekipabutusepefin.pdfIn PDF document text
    • http://sagunum.rf.gd/xajenanakalusafan.pdfIn PDF document text
    • http://weromewu.rf.gd/16502216048.pdfIn PDF document text
    • http://gerekuvuburase.epizy.com/barron_s_sat_flashcards.pdfIn PDF document text
    • http://vifotuniso.rf.gd/latest_jack_reacher_novel_by_lee_child.pdfIn PDF document text
    • http://nixefafezas.rf.gd/9324627545.pdfIn PDF document text
    • http://gavofuduwaxene.epizy.com/does_vinsanity_shred_work.pdfIn PDF document text
    • http://botadepano.epizy.com/55116858213.pdfIn PDF document text
    • http://xubejivulovitam.rf.gd/gavefedaxe.pdfIn PDF document text
    • http://tuxexagixib.rf.gd/how_to_solve_literal_equations_with_fractions.pdfIn PDF document text
    • http://zovagupegi.rf.gd/assembly_language_in_c.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EE 5240 bytes
SHA-256: 9ec08682dbb3e4863d00b18e00921fd225633584a399156f9868c0695ed4621a

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