Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44fa33dc836d1f7…

MALICIOUS

PDF

77.9 KB Authoring application: Scribus
MD5: 1412b10a96cae5f352b3aec83ba07114 SHA-1: 5003549ba0ef90fdd98f70900b8a1705705aaa35 SHA-256: f44fa33dc836d1f789fa2b8078dcd3495903b562c516e0d3b1263e730c88649e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or redirection strategy, likely intended to lead users to malicious content or phishing sites. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further support the malicious nature of this file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://aquifizzle.com/uploads/1/3/0/3/130323479/c18fff.pdf
    • http://brickriver.net/uploads/1/3/0/6/130620666/fakaga.pdf
    • http://oakcreekcenter.org/uploads/1/3/0/4/130436040/fc1b22a1db5e1.pdf
    • http://skeletonsoutofthecloset.com/uploads/1/3/0/7/130775986/1955622.pdf
    • http://tonsofcasinos.com/uploads/1/3/0/5/130551160/2297362.pdf
    • http://www.watercolornaturejournals.com/uploads/1/3/0/6/130639837/1240046.pdf
    • http://daleystyle.com/uploads/1/3/0/3/130323928/9371370.pdf
    • http://erskinevilleacupuncture.com/uploads/1/3/0/5/130544625/fesorimaf_mumexezewidoj.pdf
    • http://mail.evylareau.com/uploads/1/3/0/3/130323329/novijum.pdf
    • http://www.thebatmanstatuecollector.com/uploads/1/3/0/6/130639976/7526809.pdf
    • http://gravanza.com/uploads/1/3/0/2/130287939/soriromanenap.pdf
    • http://onlineforex123.com/uploads/1/3/0/8/130874282/vefutifavuxufusozego.pdf
    • http://michelsunlee.com/uploads/1/3/0/5/130551896/razepexabepopelani.pdf
    • http://muninbikes.com/uploads/1/3/0/3/130323298/9f88280ddbf329.pdf
    • http://ubs-taxfreelosses.com/uploads/1/3/0/6/130620678/ritufusefanid.pdf
    • http://tyroltraverse.com/uploads/1/3/0/7/130739290/5e9f8c7b4cfc.pdf
    • http://5425ameliaearhartdr.com/uploads/1/3/0/7/130739537/kuzixuwufanaxali.pdf
    • http://psychosarah.com/uploads/1/3/0/3/130323748/valupivibofe_biresavekixe.pdf
    • http://www.agri-sense.co.za/uploads/1/3/0/6/130605324/33555f7233059b.pdf
    • http://5pointauto.com/uploads/1/3/0/4/130488574/130488574.html#one+dimensional+advection+diffusion+equation+matlab
    • http://gravanza.com/uploads/1/3/0/2/13

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042c4.bin
f85cd999e46107a63ac872337297302e1976a6abad1c3b19be40439358943b6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42C4 9444 bytes

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