Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b46668d2f2b8ba…

MALICIOUS

PDF

36.0 KB Authoring application: Mobipocket Creator
MD5: b132a727adbd69ffc6b355515df607d6 SHA-1: 2d775bb2f6bd69ed9563a12f770ddfd8e8f29e9c SHA-256: 50b46668d2f2b8babf0cceb53fb3c163a7f594969c7d57168757e5c92aabbe43
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a campaign focused on driving traffic to these external resources.

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://khflooring.com/uploads/1/3/0/6/130639860/vetefegotupux.pdf
    • http://littledarlingscookieco.com/uploads/1/3/0/6/130621191/8221299.pdf
    • http://fibromyalgiamadesimple.com/uploads/1/3/0/3/130323959/7111365.pdf
    • http://deafperutour.com/uploads/1/3/0/2/130289649/varuwenejatila-rurijugedemeken.pdf
    • http://zikatu.bottinnok.xyz/uploads/2020/01/28/xutesug-wobazarenono.pdf
    • http://clintonstudio54.com/uploads/1/3/0/4/130483210/panudakemezoke.pdf
    • http://westtechmobile.ca/uploads/1/3/0/3/130379101/8676551.pdf
    • http://beachesdbt.com/uploads/1/3/0/2/130289651/4208564.pdf
    • http://rek.fineremont.ru/uploads/2020/01/29/7427628.pdf
    • http://mrsrosatosclass.com/uploads/1/3/0/4/130476076/8979667.pdf
    • http://jevolare.paypal-support-limitted.com/uploads/2020/01/29/4087860.pdf
    • http://brecht.holyrood-drama.com/uploads/1/3/0/6/130620536/6523361.pdf
    • http://svus.org/uploads/1/3/0/6/130604576/5476fe0e97.pdf
    • http://pepay.host/uploads/1/3/0/5/130588834/130588834.html#category+theory+and+applications+a+t

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001361.bin
e59e161beaae499c034ff672c07ed0e119dc70e0a7bef38b379426fc45db656a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1361 7880 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.