Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c0400abbdf186b…

MALICIOUS

PDF

75.8 KB Created: 2021-01-17 20:27:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b778fd556aa9d48013d1861145a34371 SHA-1: 67fa92d2b795cbdfb3e2636eaa38b370a73bf950 SHA-256: 52c0400abbdf186b8d5fb960a6d74652e1c6770f0613909c1cda2d42d73cdf26
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for redirecting to known malicious infrastructure. The document contains a large number of embedded URLs pointing to disposable hosting, suggesting a phishing or scam campaign. The ML classifier also strongly indicated maliciousness.

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
  • 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.
  • 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://traffine.ru/123?utm_term=brownie+pan+egg+recipes In PDF document text
    • https://rutebesutev.weebly.com/uploads/1/3/4/1/134131531/jizarekem.pdfIn PDF document text
    • http://wadixokup.22web.org/17918789358.pdfIn PDF document text
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/povonufopemigiwapi.pdfIn PDF document text
    • https://ziluxokoker.weebly.com/uploads/1/3/4/3/134392919/remukoxota.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417222/normal_5ff775884f251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5f8a9eaaf1a83.pdfIn PDF document text
    • http://bapipakaroxi.22web.org/62196974408.pdfIn PDF document text
    • http://dovulup.iblogger.org/rekewobukila.pdfIn PDF document text
    • https://mikezexevi.weebly.com/uploads/1/3/4/5/134528008/7215830.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jabelakejirer.epizy.com/myeconlab_chapter_2_homework_answers.pdfIn PDF document text
    • http://mujawonevafo.rf.gd/78327885736.pdfIn PDF document text
    • http://nolagevupuxuje.epizy.com/sad_couple_photos.pdfIn PDF document text
    • http://dixolasafu.epizy.com/nubepi.pdfIn PDF document text
    • http://bolapapuziku.epizy.com/correlative_conjunctions_worksheet_fill_in_part_1.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/89742770372.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/kadibekuvobokida.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_off0000edba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBA 5208 bytes
SHA-256: cc6127950c15a1a2bba9904875fabd8306996d10626e5d3949476bc612ad3cb2
font_01_sfnt_off0000ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9D 10180 bytes
SHA-256: d89565f21474dbae68963d6d5b461aaa6bd554df5be11fdb02ae13c784344068

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