Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab63223ed6cbc7c…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 11:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d09ef6ecb775be784abb40b8fa2fd97f SHA-1: 544a9f7f1aa7f7ed07d4e2b749a2572f3b1b73c0 SHA-256: 9ab63223ed6cbc7c57c4d6da8512774a2679f79cf8f6b6015a9ec133af482f70
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on Weebly and other free hosting services, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the presence of external links and the nature of the heuristics point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/wix?keyword=cuales+son+los+cuatros+puntos+cardinales
    • https://giravegide.weebly.com/uploads/1/3/2/6/132681237/lilasatomugum.pdf
    • https://cdn-cms.f-static.net/uploads/4444123/normal_60146843132b2.pdf
    • https://rasizuxuner.weebly.com/uploads/1/3/1/3/131378923/82397907af59.pdf
    • https://sudopefizumizer.weebly.com/uploads/1/3/1/3/131383323/wogoj-fekexobipepale-bagone-tomajefugitas.pdf
    • https://tabanaxil.weebly.com/uploads/1/3/1/8/131857193/b11401ddce0c5.pdf
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/1551841.pdf
    • http://mosomupusafebin.medianewsonline.com/sefomefunatexa.pdf
    • https://vidijizuv.weebly.com/uploads/1/3/0/7/130776341/voxuf.pdf
    • http://sipipewawezizuf.getenjoyment.net/1850659926.pdf
    • https://gokisixoxi.weebly.com/uploads/1/3/4/1/134108612/d83ef7c53.pdf
    • https://lovalizivida.weebly.com/uploads/1/3/5/9/135990258/77098cd567f10.pdf
    • https://cdn-cms.f-static.net/uploads/4470402/normal_6034d38b2e04e.pdf
    • https://static.s123-cdn-static.com/uploads/4405929/normal_5fce87148d900.pdf
    • https://mofutobanu.weebly.com/uploads/1/3/1/3/131383854/zixotolel.pdf
    • http://xajabuzowa.scienceontheweb.net/equilibrium_constant_table.pdf
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/dajofipet-vunam.pdf
    • https://fakazurirogedim.weebly.com/uploads/1/3/4/7/134743668/jemogusatuz-leravija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vobuluga.rf.gd/aged_care_job_interview_question_and_answer.pdf
    • http://bivoxubi.epizy.com/abraham_lincoln_caador_de_vampiros_livro.pdf
    • http://ruzakema.onlinewebshop.net/26676332981.pdf
    • http://gonesipida.epizy.com/milez.pdf
    • http://tafaredos.rf.gd/2391091496.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda9.bin
438ea191b16e8592a14b3851ede7a899515552ab63b9f84454ec43dec517afc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA9 4972 bytes
font_01_sfnt_off0000fe99.bin
109188cb51a0dd7c3e2c1d2e10dd622e20da0d956e82cf780b14271f09b103ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE99 11708 bytes

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