Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4aa4c7e9043624d…

MALICIOUS

PDF

35.8 KB Authoring application: Adobe PDF Library 9.0
MD5: afa7d5cc5023564172fa0397e2704eda SHA-1: ffa042f860ceece5f8863165f4958890c1854336 SHA-256: f4aa4c7e9043624d063179aec95f74654c9e8178d0ca496398cfe9e646bff44f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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://bakktchain.com/uploads/1/3/0/3/130324092/nibirulalovuna.pdf
    • http://manofaran.net/uploads/1/3/0/4/130489363/2956212.pdf
    • http://afrahroyal.de/uploads/1/3/0/4/130476650/fugikapipese.pdf
    • http://44michigan.com/uploads/1/3/0/4/130483924/loketu.pdf
    • http://ariannatibbsphotography.com/uploads/1/3/0/2/130291593/9169604.pdf
    • http://www.archersoftball.org/uploads/1/3/0/7/130738973/zexobetosowo_kepewetipowo.pdf
    • http://vietwiki.com/uploads/1/3/0/6/130605422/df908ffc13.pdf
    • http://ecoautoreview.com/uploads/1/3/0/6/130620928/59990.pdf
    • http://mail.butlercleanersandlaundry.com/uploads/1/3/0/5/130551282/baxenasetu.pdf
    • http://www.theayasafund.com/uploads/1/3/0/6/130604972/bogaxiweniwu.pdf
    • http://www.effortmagazine.com/uploads/1/3/0/5/130588318/1692284.pdf
    • http://dreamnumbersz.com/uploads/1/3/0/5/130588954/vasuwamevadete.pdf
    • http://mx.jaredssmallengine.com/uploads/1/3/0/3/130313323/5641014.pdf
    • http://lakehomemag.com/uploads/1/3/0/8/130873923/8cbeeffe88fcd0.pdf
    • http://financialcleansing.com/uploads/1/3/0/6/130604933/kaxarodebuzeminutuj.pdf
    • http://lenztrips.com/uploads/1/3/0/8/130814021/2235741.pdf
    • http://carterteam.store/uploads/1/3/0/3/130379465/wujurev.pdf
    • http://gi30q.slpny.com/uploads/1/3/0/8/130815228/130815228.html#yawning+reading+passage+ielts+answers
    • http://vietwiki.com/uploads/1/3/0/6/130605422/df908

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc5.bin
8dceb9e52e614dc5b1d957eb6bfcb9613a60850763bf6d613817c12403e59636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC5 7792 bytes

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