Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45f82b5af2d4cba…

MALICIOUS

PDF

42.3 KB Authoring application: Scribus First seen: 2021-06-17
MD5: 151626d729c0238287f342713abe2ab7 SHA-1: 088bbe07217eeeb67ecc0f1dff6050eb884b11cb SHA-256: f45f82b5af2d4cba9394034f354fb8fab3dd8f00d78ec637f9731a8da4465c13
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, specifically classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs likely serve to distribute further malicious content or engage in SEO spam, making the primary attack pattern a phishing or content distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 http://fapapev.espace-clientsv3-0range.com/uploads/2020/01/28/9523392.pdf In PDF document text
    • https://gesuxadi.weebly.com/uploads/1/3/0/5/130590507/1ec945d19b669e.pdfIn PDF document text
    • http://weirdandthewonderful.com/uploads/1/3/0/5/130540559/677d9d4ba011bb.pdfIn PDF document text
    • http://nilenate.clinicalresearchorganization.ru/uploads/2020/01/27/pedarutu-jalakolikeza.pdfIn PDF document text
    • http://filebire.lioeleshop.ru/uploads/2020/01/27/zejilixaf.pdfIn PDF document text
    • https://laweneruzunoba.weebly.com/uploads/1/3/0/2/130289793/jixupukurezin-vibetawurivi-gebudaramidonal-dapeledozine.pdfIn PDF document text
    • http://jdbuckwellfineart.com/uploads/1/3/0/5/130589184/posuvadimumedelejeg.pdfIn PDF document text
    • http://sutuj.dogshops.online/uploads/2020/01/28/ketopunena.pdfIn PDF document text
    • http://sedalexo.spb-lavanda.ru/uploads/2020/01/28/xevam.pdfIn PDF document text
    • https://duzixikepur.weebly.com/uploads/1/3/0/2/130270834/7765249.pdfIn PDF document text
    • https://zixosexerefude.weebly.com/uploads/1/3/0/5/130538945/dabuzo_buzemiwo_tewizumesuwe_domalupowagosu.pdfIn PDF document text
    • https://nitajewodex.weebly.com/uploads/1/3/0/2/130270889/wotudusijekibe.pdfIn PDF document text
    • https://jawedadozexot.weebly.com/uploads/1/3/0/5/130543156/9599587.pdfIn PDF document text
    • http://eyesimlab.com/uploads/1/3/0/2/130270905/vejevedunosiv-kokupamumume.pdfIn PDF document text
    • http://salaxavire.vn-kr.com/uploads/2020/01/29/6244259.pdfIn PDF document text
    • http://bixo.japher.site/uploads/2020/01/27/6059274.pdfIn PDF document text
    • http://bhpmedicalconsultants.com/uploads/1/3/0/5/130551611/130551611.html#descargar+biblia+catolica+gratis+parIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1543 9176 bytes
SHA-256: aaba2d6be896185258be43f98f0d04abf1f8c908169846ede8b16de2355e9c08
font_01_sfnt_off00005df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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