Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c92f2274aa6b62…

MALICIOUS

PDF

56.0 KB Authoring application: GIMP
MD5: 38871aa8b741645b5fc534df20f0eff4 SHA-1: b49d4aa964bc5a283d6da91a1767642fcf8676b7 SHA-256: 59c92f2274aa6b62aef69ac959c5e706e058f46342bf4ef6c4cf7c98805df208
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 a critical PDF_SEO_LINK_FARM rule indicating a mass external PDF link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, such as http://roy-heydrich.de/uploads/1/3/0/5/130543084/c06d3399ac21a.pdf, are likely used to redirect users to malicious sites. The document body contains garbled text mixed with some of these URLs, suggesting an attempt to obscure the malicious intent.

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://roy-heydrich.de/uploads/1/3/0/5/130543084/c06d3399ac21a.pdf
    • http://mypopuphotel.com/uploads/1/3/0/6/130639224/8720314.pdf
    • http://recordingstudiospokane.com/uploads/1/3/0/7/130738578/wefav.pdf
    • http://kbkornholegames.com/uploads/1/3/0/5/130550684/vivinifufomojab.pdf
    • http://dgaccountingtax.com/uploads/1/3/0/6/130604299/xejox.pdf
    • http://highlanderconnection.com/uploads/1/3/0/6/130620549/a11255d628110a.pdf
    • http://mail.tpstraining.com.au/uploads/1/3/0/2/130274376/944f62eca98fc27.pdf
    • http://elev8catering.com/uploads/1/3/0/6/130639504/bagadekudisonidi.pdf
    • http://www.rockrboard.com/uploads/1/3/0/7/130739498/fb2f79e.pdf
    • http://abettertravelagency.com/uploads/1/3/0/4/130488387/letemirusebova-puxukugodale-fiwixakup-fosoxoxit.pdf
    • http://greshambankruptcylawyer.com/uploads/1/3/0/4/130490250/a7f239c132d88c5.pdf
    • http://hostmaster.somersetcountyfarmersmarket.com/uploads/1/3/0/2/130289019/xixen_lovevonisiki_padizupe_subad.pdf
    • http://iteroimplantdentallab.com/uploads/1/3/0/8/130814594/845100.pdf
    • http://pointlessreviews.com/uploads/1/3/0/5/130543813/1853ef91d74efb7.pdf
    • http://www.nwndesign.com/uploads/1/3/0/3/130379294/5166ba.pdf
    • http://thendralgardens.com/uploads/1/3/0/3/130324136/suvukusazulive-bulazuroviwa-jabozadovilu-nixejajib.pdf
    • http://www.sophiesrabbitry.com/uploads/1/3/0/7/130739120/bonepes-lebapunekok.pdf
    • http://jna4x2.bdgct.com/uploads/1/3/0/6/130603997/130603997.html#aditya+birla+health+insurance+coimbatore

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000143f.bin
2d7d45dbb97885edc6759397306fc0aa1425abad9ee8362b7036b5769cb49ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x143F 8164 bytes

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