Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c229133f8157d3…

MALICIOUS

PDF

34.6 KB Authoring application: Karbon
MD5: 44d34e4a165399b36cce58489c606f88 SHA-1: 9025d23203c93d36cc3cfda01fabd8daf0b91be8 SHA-256: c1c229133f8157d3569992cc21c2c666b91560e242f2c0906653071884e93b80
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic-driving intent. No scripts were extracted from this sample, but the extensive link farm is the primary indicator of malicious activity.

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://rallyforred.com/uploads/1/3/0/5/130540366/6399242.pdf
    • http://pebbleyoga.com/uploads/1/3/0/8/130813877/nofiwaxuxibi-wigawo-wasuwivoru.pdf
    • http://crybaby.club/uploads/1/3/0/4/130475964/dukodinuviriz_weforedex.pdf
    • http://therightofway.org/uploads/1/3/0/5/130588834/6783594.pdf
    • http://nomorejoemoore.com/uploads/1/3/0/5/130588784/535976fee34d471.pdf
    • http://ianburnley.net/uploads/1/3/0/3/130313098/jusaxapodatotevek.pdf
    • http://pulleyautoparts.com/uploads/1/3/0/4/130483821/3666579.pdf
    • http://ryanbinford.com/uploads/1/3/0/7/130776169/ruwisula.pdf
    • http://7daysdietplan.net/uploads/1/3/0/2/130288498/foroxilawepelo-mukode-mutarowevojes.pdf
    • http://purpleboots.net/uploads/1/3/0/5/130588783/sigunewexigoruf_vizig_virugekuta.pdf
    • http://jindubaijiale.br3h.com/uploads/1/3/0/8/130813134/130813134.html#bohemian+rhapsody+chords+guitar+chords

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000160b.bin
9efd973159a1debcadf9081fe4a78f4a6dd104a4e510e71818be41b07473938d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160B 8564 bytes

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