Malicious PDF — malware analysis report

Static analysis result for SHA-256 38de704a474340f1…

MALICIOUS

PDF

38.6 KB Authoring application: Karbon
MD5: 4ebfa949b31cb6ddcd8580264087a17d SHA-1: 37e6082893afb2f1471425b34dd0975f70a1e08f SHA-256: 38de704a474340f1cac3a16058ac87ab691f55b2a7c8a797e84563f325bafa25
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further indicates a malicious intent, likely related to phishing or traffic redirection. The document body is heavily obfuscated and contains a large block of URLs, reinforcing the link farm nature of the attack.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://outsiderartauction.com/uploads/1/3/0/6/130639760/6598341e21e.pdf
    • http://stonekazan.ru/uploads/2020/01/28/balifupupuzamojabibe.pdf
    • http://branduconsulting.com/uploads/1/3/0/2/130272231/03d88956b4e7.pdf
    • http://eaglespridervspacecoast.com/uploads/1/3/0/3/130323224/fabevu_vafinoj_gilofimopefizo.pdf
    • http://crumpgreenhouse.com/uploads/1/3/0/5/130538838/2b5e5a2c4c2aa2c.pdf
    • http://laurettecarroll.com/uploads/1/3/0/4/130488839/127957.pdf
    • http://martymackenzie.com/uploads/1/3/0/4/130483986/8a4ccfd383159ef.pdf
    • http://nogexa.uaemigration.com/uploads/2020/01/28/4410347.pdf
    • http://lelovik.multilinglab.ru/uploads/2020/01/27/8883861.pdf
    • http://gagikiv.topfloor.space/uploads/2020/01/28/fulirafazivusaso.pdf
    • http://gugemet.wecleanatlantaoffices.com/uploads/2020/01/28/db945d0ac8d4c.pdf
    • http://michaeljcatering.com/uploads/1/3/0/2/130289703/nuvodova.pdf
    • http://2005viper.com/uploads/1/3/0/5/130551445/4f363431.pdf
    • http://aspire.ejrp.org/uploads/1/3/0/6/130603852/130603852.html#best+bollywood+songs++websites

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000151a.bin
7f52f2a12b07f448858a69645b2356f3d7cba71f59da0cb3a565c657c710bcc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151A 8076 bytes

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