Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5af2e21576840a4…

MALICIOUS

PDF

43.9 KB Authoring application: SWFTools
MD5: a6297d75e8a573b1e0166698bdabb41d SHA-1: 5244555b66654070e6efce0c479ae7b8694f9c7b SHA-256: b5af2e21576840a47f13bc1acc8a689f8e898f7bc499de2c15266953983a604f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as phishing. The embedded URLs likely lead to further malicious content or phishing pages. No scripts were extracted from this sample.

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://smykkemageren.com/uploads/1/3/0/6/130604257/8566876.pdf
    • http://redbookproperties.com/uploads/1/3/0/7/130775940/f0868ffc34d050f.pdf
    • http://bhuntcouture.com/uploads/1/3/0/5/130589174/pixowu_kaxogu_tirazabigafug.pdf
    • http://kabongs.org/uploads/1/3/0/7/130738628/medop.pdf
    • http://aukstamford.com/uploads/1/3/0/7/130775269/sonodoxusezat.pdf
    • http://calvarybconline.net/uploads/1/3/0/6/130621874/mojebusaligipo.pdf
    • http://taiwanbreastcenter.com/uploads/1/3/0/6/130620657/fogijenowoxa_nunigukev_wevodeme_tijijapus.pdf
    • http://lithuania.wegoproject.lt/uploads/1/3/0/6/130620747/5971353.pdf
    • http://www.sunniesllc.com/uploads/1/3/0/5/130550998/7851950.pdf
    • http://photoandvideoclasses.com/uploads/1/3/0/6/130604874/05e33cc757cea.pdf
    • http://plumislandweavingco.com/uploads/1/3/0/6/130621250/5394742.pdf
    • http://jacksonbell.net/uploads/1/3/0/6/130604962/podudekitaru.pdf
    • http://burlesquepodcasts.com/uploads/1/3/0/3/130313525/8199608.pdf
    • http://stonedmedusa.com/uploads/1/3/0/8/130874431/c3a41.pdf
    • http://amckbc.com/uploads/1/3/0/5/130550758/4149940480998a.pdf
    • http://kristawassenaar.com/uploads/1/3/0/7/130740000/5139042.pdf
    • http://jna4x2.bdgct.com/uploads/1/3/0/6/130620587/130620587.html#adobe+edge+animate+cc+2015+mac

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000382b.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x382B 16036 bytes
font_01_sfnt_off00004f92.bin
b7a15c2b43a21e0f6dbc4bf71d8f36afded676a1bede6a4779b24a6dd76ca027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F92 8216 bytes

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