Malicious PDF — malware analysis report

Static analysis result for SHA-256 3046799267bf3fd1…

MALICIOUS

PDF

68.1 KB Created: 2021-02-27 20:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3bbf09a56352ac6d8c9e1abf7347c1af SHA-1: e94a1dc626513c02406abaa380a422c876c38206 SHA-256: 3046799267bf3fd15d8b816505e25e96b269056baa570ccb60e489efa1bc2f39
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a significant portion pointing to disposable domains and potentially acting as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests a deliberate attempt to obscure the true malicious destinations. While no scripts were extracted, the PDF structure and embedded URIs strongly suggest it's designed to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9772

Heuristics 4

  • 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 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/award?keyword=makita+ls1013l+price PDF link annotation
    • http://roskycnmx.com/wuvokep95hiu.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/82082337066.pdfIn PDF document text
    • http://jezefumivodasaw.22web.org/95390730924.pdfIn PDF document text
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/c44a96b3b6f464.pdfIn PDF document text
    • http://dalurekawo.iblogger.org/gumuwulagikirunepezagolu.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/useful_french_phrases.pdfIn PDF document text
    • http://my-favshoph.online/the_norton_anthology_of_african_american_literature_third_editionoj6l2.pdfIn PDF document text
    • https://sejerujezoxovod.weebly.com/uploads/1/3/1/3/131398555/422e73af51.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/flysky_nirvana_review.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/ccna_security_certification_practice_exam.pdfIn PDF document text
    • http://goodxday.xyz/free_able_resume_templates_for_google_docs4jwsi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_6013c7fd0e8a0.pdfIn PDF document text
    • https://wivexisi.weebly.com/uploads/1/3/1/0/131070498/pemekujam-vupewigoxu-gizaru.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/7532479.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/sivanira/kurigidilazolu.pdfIn PDF document text
    • http://zerozuru.epizy.com/android_application_development_tutorials_point.pdfIn PDF document text
    • http://varaxekewuveza.epizy.com/zafumuwudorawakoful.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_off00010333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10333 5356 bytes
SHA-256: db5b832be600be130a69bfa839ef1d3d1649d7d59337bfece02c5b55b39c3b9a