Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccb6c300654079e…

MALICIOUS

PDF

52.4 KB Authoring application: PDFBox
MD5: 34366d80573b25c0109ee7f88ac9037b SHA-1: 202479aecb8ac8bcb51501863f925112dc17a8c1 SHA-256: 9ccb6c300654079e15a41c0d2a73bda55f0625a2bae3741afb3aefcc9e4d45bc
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://thefirmm.com/uploads/1/3/0/3/130324063/865ab20498f5.pdf
    • http://xvalhalla.com/uploads/1/3/0/6/130605344/2830960.pdf
    • http://thevegantravels.com/uploads/1/3/0/6/130605358/jojadetajewowinaves.pdf
    • http://fluction.org/uploads/1/3/0/2/130273842/zolusi.pdf
    • http://my-family-lore.com/uploads/1/3/0/5/130550911/25242e013b.pdf
    • http://lovelykacie.com/uploads/1/3/0/4/130483632/8927311.pdf
    • http://pomocpejskum.com/uploads/1/3/0/4/130435635/1043066.pdf
    • http://tahomahome.net/uploads/1/3/0/5/130589250/9107045.pdf
    • http://citizen-productions.com/uploads/1/3/0/4/130435835/kedonefiwa.pdf
    • http://elospy.com/uploads/1/3/0/5/130590682/pugudivezobegasukak.pdf
    • http://midwestvegfest.com/uploads/1/3/0/2/130272438/214781321ce3d56.pdf
    • http://joshuasandefur.net/uploads/1/3/0/3/130313299/1411150.pdf
    • http://balkanco.com/uploads/1/3/0/6/130604141/a042291096.pdf
    • http://kevinskids.org/uploads/1/3/0/6/130639924/wegexitok_gevawukab_pororimonabefi_xasux.pdf
    • http://oregonphotoco.com/uploads/1/3/0/5/130589315/tinosolemisudoriwas.pdf
    • http://betterwebmail.com/uploads/1/3/0/6/130620375/1106539.pdf
    • http://alexanicolebooks.com/uploads/1/3/0/8/130813888/kutitobovug.pdf
    • http://skatefiction.com/uploads/1/3/0/3/130323743/kubusupuleju.pdf
    • http://sems4acultureoflife.org/uploads/1/3/0/4/130476821/7883185.pdf
    • http://www2.rdatamining.com/uploads/1/3/0/2/130289745/295f5fad2a3f40.pdf
    • http://ryanrmatthews.com/uploads/1/3/0/2/130272071/lugebuxojutexa-guwodipizave.pdf
    • http://ericamcquiddypsyd.com/uploads/1/3/0/6/130604310/65785.pdf
    • http://morganhomesliving.com/uploads/1/3/0/2/130289305/863b90.pdf
    • http://higherlearningpress.org/uploads/1/3/0/4/130489696/sirotevitav.pdf
    • http://host144.carmichaelnl.com/uploads/1/3/0/4/130483761/130483761.html#advantages+and+disadvantages+of+hurdle+technology+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001155.bin
2da71da82c52920bcb915061139244c7073912e749c5fb500fa38ead7ad30fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1155 8144 bytes

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