Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5b183c0fcbaf5e…

MALICIOUS

PDF

38.8 KB Authoring application: OpenOffice.org
MD5: 0726ec165af6a5c7cf7c6960e50e7a1a SHA-1: 4159c0695984cdb91d723154ec79b6947aa21c24 SHA-256: ab5b183c0fcbaf5e5dce26144273a8c1347a65e9b74178f9626bec0c232b7887
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external PDF links, with the primary domain being therockstarwithinyou.com. This suggests a phishing or redirection campaign, aiming to lure users to potentially harmful content through a link farm.

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://therockstarwithinyou.com/uploads/1/3/0/7/130739164/darasogowomopupom.pdf
    • http://cuskga.com/uploads/1/3/0/4/130483561/vuxutuviwobituxuku.pdf
    • http://tavernegoudenpunt.be/uploads/1/3/0/5/130588846/9272537.pdf
    • http://serendipitousdesigns.net/uploads/1/3/0/6/130605196/21ca14b06ef.pdf
    • http://msrivaskids.com/uploads/1/3/0/6/130639591/lomejodaxer-gutuso-gifimazagu.pdf
    • http://golfbravobravo.com/uploads/1/3/0/5/130551294/5607383.pdf
    • http://artofmoses.com/uploads/1/3/0/6/130604177/mofawelix_doxujulopizama_lunag_setat.pdf
    • http://protechion.us/uploads/1/3/0/6/130639452/kususemopan-miwenowawisokof-migemojami.pdf
    • http://help-bank.ru/uploads/2020/01/29/noxukokavosolesubi.pdf
    • http://vufu.blog-sovetov.ru/uploads/2020/01/28/7d8ccdc24e2400.pdf
    • http://zoommyrent.com/uploads/1/3/0/7/130740522/falufekudunifobinip.pdf
    • http://steepingleaves.com/uploads/1/3/0/6/130604027/271387b4227f3.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/5/130550925/130550925.html#blaupunkt+tv+manual+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b6.bin
2a6f9738223ea440fdd3b38707691519e01593dff923adef84045e65bf200b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B6 8996 bytes

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