Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda8101cdee87b8d…

MALICIOUS

PDF

48.6 KB Authoring application: PDFedit
MD5: bab3d740d83b7cf2b980f9d92fbf1f69 SHA-1: e238f091509ecff2bf848703e377cabdb7e0e1ae SHA-256: fda8101cdee87b8dbe1b6d00786fea2aea35ec95ae028bd38df5d3c7a25f9528
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicative of a link farm or SEO manipulation tactic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The document body is heavily obfuscated and contains what appears to be junk data, making its direct intent unclear, but the heuristic firings strongly suggest a phishing or traffic-driving scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://swaynami.com/uploads/1/3/0/3/130313000/560964.pdf
    • http://brooklyneventstudios.com/uploads/1/3/0/5/130589054/1605466.pdf
    • http://drunkoclock.com/uploads/1/3/0/6/130620283/finipalakisojube.pdf
    • http://rmhcredshoegala.com/uploads/1/3/0/8/130814586/febaxopavi.pdf
    • http://thescentedsheep.com/uploads/1/3/0/4/130489023/lojebobit.pdf
    • http://reallyartsltd.net/uploads/1/3/0/4/130494743/fisagud-bevotusuledeler-memubofomujon-xuxufes.pdf
    • http://www.lowetruckingworld.com/uploads/1/3/0/6/130621979/bc66e60f.pdf
    • http://optiki.bg/uploads/1/3/0/5/130588428/tujapilidavorev.pdf
    • http://aimesif.com/uploads/1/3/0/9/130969164/6268352.pdf
    • http://matt-dana-wedding.com/uploads/1/3/0/3/130379172/16004d.pdf
    • http://metroeastinterfaith.com/uploads/1/3/0/4/130489417/lajaxu.pdf
    • http://www.crescentcitycupcakes.com/uploads/1/3/0/5/130590469/tagekolelutunazu.pdf
    • http://presqueassezbien.com/uploads/1/3/0/7/130775654/1640ac4.pdf
    • http://gymdominator.com/uploads/1/3/0/4/130475955/bupewoko-murimetedefize-powodofopulinan.pdf
    • http://sales13-sip-phone.pleasingfood.com/uploads/1/3/0/8/130874339/130874339.html#bituminous+road+construction+report+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058a5.bin
b095009e1aa7b679086a2dd093949a1e2bfdfa179c83d9e64a20210f199a406d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A5 1544 bytes
font_01_sfnt_off000062f7.bin
764e9597a85a61ddeadd3730a901d6217a7121bada5fb35cdfb86ef938d3a3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 8604 bytes

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