Malicious PDF — malware analysis report

Static analysis result for SHA-256 d665450ca0147f8d…

MALICIOUS

PDF

43.0 KB Authoring application: OpenOffice.org
MD5: 2674b80f3d23fc653f5d92265a045df0 SHA-1: 7f68b89005c05aa113e6cb78b8e3556db4ff5afe SHA-256: d665450ca0147f8d5765a3de3286b20750291697d661cd9c647a72c01c763b56
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The primary attack pattern involves directing users to a network of suspicious URLs, likely for phishing or malware delivery.

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://aiafricatravel.co.za/uploads/1/3/0/6/130620372/bidupod.pdf
    • http://montecristifinesouthamericanarts.com/uploads/1/3/0/5/130539714/giloxelerepuj_metoz_danemakonapite.pdf
    • http://taxivu.peregorodka-lab.ru/uploads/2020/01/29/37b010917e8a6b.pdf
    • http://aktivmassageterapi.se/uploads/1/3/0/6/130639397/rofex.pdf
    • https://foxoforavikuvi.weebly.com/uploads/1/3/0/3/130379193/nobibewenaf.pdf
    • http://scopehomeinspection.com/uploads/1/3/0/5/130539099/farasavur.pdf
    • http://usseawolf.com/uploads/1/3/0/5/130551319/9311139.pdf
    • http://motanum.com/uploads/1/3/0/6/130620878/desipigewuden.pdf
    • http://candicemoss.com/uploads/1/3/0/6/130639506/6771792.pdf
    • http://nica2018.weebly.com/uploads/1/3/0/5/130551135/6ff301665a2.pdf
    • http://miracleinabucket.com/uploads/1/3/0/7/130740480/130740480.html#equus+peter+shaffer+read+online

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001275.bin
f1f59a269320321abdff25a6fd8298b2323d0cab27f4140352887bc2c07e87fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1275 8472 bytes
font_01_sfnt_off000060a3.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A3 16268 bytes

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