Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9cdbb9ce7cd40aa…

MALICIOUS

PDF

40.5 KB Authoring application: PDFedit
MD5: b82b3a1b5245eca1c6a53365c35e183e SHA-1: 5d92fad870a95ff8b4746dd54395b6143160bd54 SHA-256: c9cdbb9ce7cd40aa81a94fc0f6458ebf2a98695dfa7093b77f19ef5552ef5741
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text is heavily corrupted and does not provide further context on the specific 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://anzaplays.net/uploads/1/3/0/6/130604370/1834948.pdf
    • http://autopowercar.com/uploads/1/3/0/3/130323641/balemopupabatidag.pdf
    • http://naturalifeec.com/uploads/1/3/0/6/130604370/3185819.pdf
    • http://underlineconnections.com/uploads/1/3/0/4/130483322/beb7962e2.pdf
    • http://missrlong.com/uploads/1/3/0/3/130379232/texexufab_vemujiwijaw_vemawubidapevad_kupatovikelataj.pdf
    • http://bookrenewers.com/uploads/1/3/0/5/130551554/balafoboxat.pdf
    • http://chiavantage.com/uploads/1/3/0/7/130738565/xekezom.pdf
    • http://cookiecrumbleslimes.com/uploads/1/3/0/6/130620882/wezuxuzav.pdf
    • http://jamesbrown4judge.com/uploads/1/3/0/5/130590123/9be421fed.pdf
    • http://mlmmarketinglab.com/uploads/1/3/0/6/130639768/fereraluro.pdf
    • http://gruptravel.net/uploads/1/3/0/5/130542822/f2dbf2c58c5f.pdf
    • http://ilachocolat.com/uploads/1/3/0/5/130589328/5009509.pdf
    • http://dealingwithstuff.com/uploads/1/3/0/6/130603895/dajux.pdf
    • http://mopola.com/uploads/1/3/0/6/130604618/jerev.pdf
    • http://xiangfengsong.com/uploads/1/3/0/5/130589338/lodozopubikixududabu.pdf
    • http://milleniummobile.ca/uploads/1/3/0/2/130287529/kobonifumubovokamu.pdf
    • http://collinforcouncil.com/uploads/1/3/0/5/130588418/2164071.pdf
    • http://mta-sts.mx.mullinvilleks.com/uploads/1/3/0/2/130288549/labokexotogig.pdf
    • http://artofyiannipasamihalis.com/uploads/1/3/0/6/130604517/wevewu_fusejofu_mufifa_rumusomuxetopab.pdf
    • http://solopianostylings.com/uploads/1/3/0/6/130622042/wawowiregigonoj-kegumonope.pdf
    • http://sta-66-99-58-218.ladse.org/uploads/1/3/0/5/130540397/130540397.html#agreeableness+test+questions

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ff9.bin
909513cfa723bdac73ee8f93247ff83808e8dad26d983c7c3b55e4b01f85e6c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF9 7616 bytes

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