Malicious PDF — malware analysis report

Static analysis result for SHA-256 59857b70fb444025…

MALICIOUS

PDF

92.1 KB Created: 2021-06-12 18:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 567f96e44d9e9639f990095b75137265 SHA-1: cf66bf0eb5eb8dd070fcf513a851465c26d30ec4 SHA-256: 59857b70fb4440258e732771767c42c22515aec3242e4d8a29959a2b5b250e37
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious, exhibiting characteristics of a link farm designed to redirect users to various external sites. The document body, though heavily obfuscated, contains references to 'Shirdi ke sai baba mp3 song', likely a lure to attract clicks. The presence of numerous external links, many hosted on disposable domains, strongly suggests a phishing or SEO manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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
  • 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://philabc.ru/pbw?utm_term=shirdi+ke+sai+baba+mp3+song PDF link annotation
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/faxujokosomutex.pdfIn PDF document text
    • https://wudegilunukoga.weebly.com/uploads/1/3/1/3/131379548/sigodosumudit.pdfIn PDF document text
    • https://ridijetovemeriw.weebly.com/uploads/1/3/5/9/135984977/zidom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460682/normal_600039767632d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_6043193a53f31.pdfIn PDF document text
    • https://pelozaxuji.weebly.com/uploads/1/3/2/6/132680784/vaxexama_titok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_604ca2ad59e06.pdfIn PDF document text
    • https://kudezugomolalu.weebly.com/uploads/1/3/5/3/135331411/3907282.pdfIn PDF document text
    • https://fizupubiwox.weebly.com/uploads/1/3/0/7/130775838/julusaxan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_606e2a8e41765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452837/normal_5ff4e1bb47e87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417122/normal_5fe5a6c118325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420748/normal_5feb6be45be1d.pdfIn PDF document text
    • https://nizakibete.weebly.com/uploads/1/3/4/3/134386075/5c4a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_6056b3a740a7e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba7b0acf-c53b-441b-9d78-8b39c108fe15/42102062888.pdfIn PDF document text
    • http://duziruromeja.pbworks.com/f/67482508042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d2db13-92c2-4199-82bf-8451c76e029c/what_belt_is_jocko_willink.pdfIn PDF document text
    • http://nuxawakaxaz.pbworks.com/f/kuraw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/997e2df2-79f7-49e4-9cbb-0e2ea44a490e/how_to_change_fuse_on_kenmore_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f9b4f5-5cb9-4dd6-aa9a-bba3c1480205/53146646784.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_off00012a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2D 5812 bytes
SHA-256: 69d7e1be8c782822930f921f941f421e8c2a516ceda83d19817e94cede0509f6
font_01_sfnt_off00013dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DC3 10996 bytes
SHA-256: ede74792a2edd196e1fb0fc8f1ad1ebeb89f413fc8a0be63103c86e04cc656bf