Malicious PDF — malware analysis report

Static analysis result for SHA-256 728ed8df1424a629…

MALICIOUS

PDF

38.9 KB Authoring application: Scribus
MD5: 3d9d8fcee5ad8e950f4988e9f91c0240 SHA-1: 65e331107d2cb4397e9429fe6ad64d2e1304d542 SHA-256: 728ed8df1424a629a11345ba44176152085b8db1ca0a99d449c4ded826e2a43c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection scheme. The ML classifier also strongly flagged it as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://allisongiessuebelhair.com/uploads/1/3/0/3/130312985/kixokofasen_lufugo.pdf
    • http://scenichillvacations.com/uploads/1/3/0/5/130590153/133129.pdf
    • http://primebusinesschecks.com/uploads/1/3/0/6/130603690/930895.pdf
    • http://activekidzyoga.com/uploads/1/3/0/3/130323693/955eb0445660d.pdf
    • https://xodufokuzot.weebly.com/uploads/1/3/0/2/130289480/vixojavesegazag-biveni.pdf
    • http://freeseomagic.com/uploads/1/3/0/2/130288397/tumojujo.pdf
    • http://mindsetmakeover.site/uploads/1/3/0/6/130604378/kukezexomi.pdf
    • http://littleoasis.co.nz/uploads/1/3/0/4/130477952/zarometik.pdf
    • http://viwaresu.audiostart58.icu/uploads/2020/01/29/bukimefu_fotigukel_jezezebeja.pdf
    • http://percorsidarte.com/uploads/1/3/0/6/130620300/jesorigu_kakiga_sorazo_wudotivabokeb.pdf
    • http://nobuhotelriyadh-fullsite.devsite-1.com/uploads/1/3/0/4/130483416/130483416.html#away+in+a+manger+chords+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b5.bin
4a7a113cfc55f6db9e1df805f6c871c15af6445446e35f0802bd67a8b07e5245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B5 7964 bytes
font_01_sfnt_off00004bf0.bin
062abeeb0630068c9ebda4cd69880ba7d22c023ef851e82e77d1a768bfa0705b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF0 17648 bytes

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