Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2d89ec1bc84dae…

MALICIOUS

PDF

58.8 KB Authoring application: pdf-parser
MD5: 100baf771a079df5491843e273f686db SHA-1: 43a49daa348fe2b83540e6b92f445d3e803171f8 SHA-256: 9d2d89ec1bc84dae0314eaee3a93d6bcc0850e05c6100ead0623d4915a98bcb6
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, pointing to other PDF files. This technique is commonly used to distribute malware or lead users to phishing sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support the malicious nature of this document. No scripts were extracted from this sample, but the extensive link farm is sufficient evidence of malicious intent.

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://nolaninc.net/uploads/1/3/0/2/130289784/9ad571f8075a7.pdf
    • http://detroitfitclub.com/uploads/1/3/0/3/130323211/kuremijederewalubir.pdf
    • http://aeelectric.org/uploads/1/3/0/8/130814247/govozomopanul.pdf
    • http://ignitewithjohnandrhonda.com/uploads/1/3/0/5/130588663/1986780.pdf
    • http://www.bogadancers.com/uploads/1/3/0/8/130873914/zunukogelab_dazam.pdf
    • http://firlesgaming.club/uploads/1/3/0/2/130274315/velixifika.pdf
    • http://mibaccountants.com/uploads/1/3/0/4/130477234/7907220.pdf
    • http://politinks.net/uploads/1/3/0/4/130476045/vunulajag_wadisipeweni_donog.pdf
    • http://ruthtenzerfeldman.com/uploads/1/3/0/7/130740376/nopumaruta_ruvis.pdf
    • http://mydivineinspirations7.store/uploads/1/3/0/5/130541641/1032732.pdf
    • http://dmc-usmf.com/uploads/1/3/0/4/130489175/607433.pdf
    • http://www.rebelsxradicals.com/uploads/1/3/0/5/130588695/bexarowebewavipiravu.pdf
    • http://angelartmotorcycledesign.com/uploads/1/3/0/7/130776085/sesomujur-dixorige.pdf
    • http://cvolierborgerhout.com/uploads/1/3/0/5/130551745/7622817.pdf
    • http://sbprocast.net/uploads/1/3/0/5/130546543/vakijovebita-kesiboxuzodi-xakoxomupuwad-robimoxe.pdf
    • http://kicknsweet.com/uploads/1/3/0/5/130588624/4820677.pdf
    • http://weedeaterridinglawnmower.net/uploads/1/3/0/7/130740069/3153700.pdf
    • http://transformationoftheheartministries.com/uploads/1/3/0/6/130621141/7422423.pdf
    • http://81444.brdge.org/uploads/1/3/0/6/130621328/130621328.html#agarose+gel+electrophoresis+for+dna+quantification+and+quality+analysis

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fcb.bin
0fc3b23d0d4fabf57edf9a321e3078c3f5b112657a68880345b88ca634068a28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB 8376 bytes
font_01_sfnt_off000088b4.bin
cdfcec7897a1c94de9a5050e27ddc770a5126b403ca5c5b32d86f2269ecff58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B4 16036 bytes
font_02_sfnt_off00009ccf.bin
63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCF 2600 bytes

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