Malicious PDF — malware analysis report

Static analysis result for SHA-256 50fdfaddaa597a49…

MALICIOUS

PDF

38.4 KB Authoring application: PDFedit
MD5: 8cad04bed60ec469925752693cb4d796 SHA-1: f17a6d925558463dffe822763491bd63357edc8e SHA-256: 50fdfaddaa597a49224867dae8526debccc5db73e0104cac37b52760fe57c1a7
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 URLs pointing to external PDF documents. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection further supports its malicious nature. The document body text appears to be corrupted or obfuscated, but the presence of URLs is the primary indicator of malicious intent.

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://scope-for-growth.com/uploads/1/3/0/5/130543653/7580911.pdf
    • http://allyourteeth.com/uploads/1/3/0/5/130539866/3054572.pdf
    • http://wendyohlendorf.com/uploads/1/3/0/6/130621281/tikepoxe.pdf
    • http://callananfitclub.com/uploads/1/3/0/7/130776754/desawetugugibe_xudojo_bajuwesinu_rukunako.pdf
    • http://asociacionperiodistaspr.org/uploads/1/3/0/5/130589083/domurag.pdf
    • http://cmcflourguam.com/uploads/1/3/0/6/130604656/20f9a1b32.pdf
    • http://aprendeinlgesrapido.com/uploads/1/3/0/4/130483667/lawufosuzomaxag_waxarezaru_wubajowegol.pdf
    • http://nekima.net/uploads/1/3/0/6/130603927/4456040.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/5/130590403/130590403.html#garnier+sheet+mask+coles

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
5547400ed653b2bbf404980ba042e9bd24175595f024ceced6b12573d5822920		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 8984 bytes

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