Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c272c45c76836aa…

MALICIOUS

PDF

40.2 KB Authoring application: LibreOffice Draw
MD5: f0cdfeb9cd84f6bf7d46cdfd923d3010 SHA-1: 891b2ded24ccd4fab220e8e3838c3542d364785a SHA-256: 1c272c45c76836aaabd6fe81e8660ee269fca0ab360bfd34e4e4a8307ae17b0b
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic identified a large number of external links, with the primary domain being brandingfaithdesigns.com. These links likely serve to redirect users to other malicious sites or for SEO spam purposes. No scripts were extracted from this sample.

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://brandingfaithdesigns.com/uploads/1/3/0/2/130270955/6604738.pdf
    • http://columbiaperioalumni.com/uploads/1/3/0/6/130603979/1e1952c85.pdf
    • http://nigelcrossan.com/uploads/1/3/0/6/130640094/2246573.pdf
    • http://thesailingbroker.com/uploads/1/3/0/4/130488387/likav.pdf
    • http://sierraunfiltered.com/uploads/1/3/0/2/130289736/3653588.pdf
    • http://ducksnestdecoys.com/uploads/1/3/0/5/130539437/50562.pdf
    • http://lakefieldbaptistchurch.org/uploads/1/3/0/6/130620929/molovapaze.pdf
    • http://barcorealtyofaquia.com/uploads/1/3/0/2/130288630/vudemubib_wuriz_zirusinajivi_jemufadituxuw.pdf
    • http://coateschicken.com/uploads/1/3/0/5/130590592/daabf.pdf
    • http://nachomamasbedandsnack.com/uploads/1/3/0/2/130273801/bapodigoko-nopevupexatin-tujubasen.pdf
    • http://eainque.com/uploads/1/3/0/6/130621082/a515a4b9d4309c.pdf
    • http://mindmapfraktl.com/uploads/1/3/0/4/130435561/letolerara_vuxidupirunogen.pdf
    • http://mysoundcollective.com/uploads/1/3/0/4/130477719/130477719.html#les+adjectifs+possessifs+en+fran%C3%A7ais+exercices+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000144a.bin
3ba9644fdcb9b18cb6f2f787d6791fbe6627c4622d5c7192631942247a8786af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144A 10448 bytes
font_01_sfnt_off000061af.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 2652 bytes

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