Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fffd8d7a2f6325…

MALICIOUS

PDF

40.2 KB Authoring application: Inkscape
MD5: eca346af3d1d9635662df5ede16e9835 SHA-1: c24ca9c9934542374a591c2cbf04c1320794c2c1 SHA-256: f5fffd8d7a2f6325d54615a9b1acf33096a6c3584edf4b5abf24f7b16ade2af8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also strongly flagged this PDF as malicious. The document body content appears to be corrupted or heavily obfuscated, preventing a clear understanding of its direct lure.

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://thecotillionsocietyofcleveland.com/uploads/1/3/0/5/130539657/2820957.pdf
    • http://sjb-productions.com/uploads/1/3/0/3/130313284/zinevelune.pdf
    • http://shop.daisyalexandriadesigns.com/uploads/1/3/0/7/130740169/towilojilajew.pdf
    • http://www.shop.creamydreamysoap.com/uploads/1/3/0/2/130289479/2ccdda1.pdf
    • http://mizzoupt.com/uploads/1/3/0/7/130775219/mazubadavo-xenewaziwimufof-nulogaf.pdf
    • http://74-123-73-87.mgwnet.com/uploads/1/3/0/2/130270768/segip.pdf
    • http://nunyabeeswax.net/uploads/1/3/0/8/130874130/4209817.pdf
    • http://mschwindtphotography.com/uploads/1/3/0/6/130639365/9743288.pdf
    • http://tysprettythings.com/uploads/1/3/0/2/130289640/9ca4f82.pdf
    • http://sistemadecrecimiento.com/uploads/1/3/0/7/130738506/magenevuwuk.pdf
    • http://northbeavercontracting.net/uploads/1/3/0/5/130588944/3868205.pdf
    • http://www.purpleclovefarms.net/uploads/1/3/0/2/130271205/b4f610f88b6f.pdf
    • http://texas2stepfilm.com/uploads/1/3/0/6/130639442/fodonivaziwisoz.pdf
    • http://nhcapcadets.org/uploads/1/3/0/8/130874010/ea3672a9cba.pdf
    • http://airarea.space/uploads/1/3/0/2/130289338/6308048.pdf
    • http://themovelab.com/uploads/1/3/0/7/130739780/xupobuwisadedew.pdf
    • http://iihl-iilh.net/uploads/1/3/0/4/130490155/dd37df92506f78.pdf
    • http://providenceorganics.net/uploads/1/3/0/2/130271015/pavimuxapafif.pdf
    • http://biltmorecreations.com/uploads/1/3/0/5/130588846/4516962.pdf
    • http://taozhiyao.com/uploads/1/3/0/2/130273987/240750.pdf
    • http://mikeharrismotivational.com/uploads/1/3/0/5/130551764/9087440.pdf
    • http://originalpancakehousesavannah.com/uploads/1/3/0/7/130740551/vujevazujasenaxeva.pdf
    • http://duckponics.net/uploads/1/3/0/2/130287283/7b364a.pdf
    • http://totallykidsdaycare.org/uploads/1/3/0/6/130604599/sivavaxudisovowoze.pdf
    • http://www.alainkouo.com/uploads/1/3/0/4/130488199/130488199.html#pillars+of+eternity+2+burning+bridges+achievement+guide
    • http://mschwindtphotography.com/uploads/1/3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000387d.bin
671a950889a824048d6800f938d03174b96faebaa738c9ab1aa20ef6021d91e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x387D 8440 bytes

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