Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c3b855027e1fa9e…

MALICIOUS

PDF

31.7 KB Authoring application: Soda PDF
MD5: 5bc09686e1d0a3b0e29f3c9aec89c385 SHA-1: 4322662baf430939a52f1fe7cc485f36a37157dd SHA-256: 5c3b855027e1fa9ece3770fadb78882e3a9864d2f7d968bc0af296a7ecea08a2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains, indicating a link farm or a distribution mechanism. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to potentially harmful content.

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://zoteye.com/uploads/1/3/0/4/130488294/3519787.pdf
    • http://healthiersoils.com/uploads/1/3/0/6/130604958/9db8bc.pdf
    • http://teaisforlife.com/uploads/1/3/0/8/130814448/1b7da.pdf
    • http://goombalooza.com/uploads/1/3/0/7/130775998/424b4.pdf
    • http://loeblibrary.net/uploads/1/3/0/2/130289746/rajikora-gapemasefinoma-denoxufu.pdf
    • http://christopherstcyr.com/uploads/1/3/0/7/130738988/bulakoseg_sekefer.pdf
    • http://tikitikitaylor.com/uploads/1/3/0/8/130874655/7269049.pdf
    • http://jdstudy.net/uploads/1/3/0/7/130739117/8943072.pdf
    • http://kyrafoster.com/uploads/1/3/0/5/130550664/jejajuribijer.pdf
    • http://jacsmacdl.com/uploads/1/3/0/6/130604505/tefozuweritogibovoba.pdf
    • http://offpeaktraining.net/uploads/1/3/0/7/130739824/e8962a563a913.pdf
    • http://darearcade.com/uploads/1/3/0/5/130550955/2098aeb81ae.pdf
    • http://sightlux.info/uploads/1/3/0/5/130589317/xufixijimoteja.pdf
    • http://townofclermont.com/uploads/1/3/0/6/130639241/9219597.pdf
    • http://millsacthelp.com/uploads/1/3/0/7/130739053/rabakageji.pdf
    • http://bataviagameon.com/uploads/1/3/0/4/130476632/a1f70c4b69083e.pdf
    • http://madeformorecreations.com/uploads/1/3/0/7/130775519/lamubemefigofi.pdf
    • http://catholicsonfire.net/uploads/1/3/0/5/130543462/nuxuwevuxadesojidu.pdf
    • http://mysunnysummer.com/uploads/1/3/0/7/130739690/pobidadiribub_vodin_fotisalefofefi.pdf
    • http://zankpos.com/uploads/1/3/0/6/130604515/b3033.pdf
    • http://weintegration.com/uploads/1/3/0/3/130324419/3948479.pdf
    • http://lonegoose.dev/uploads/1/3/0/3/130323164/fedopot_kitebivejax_pilowapabosabik.pdf
    • http://host196.carmichaelnl.com/uploads/1/3/0/5/130590180/130590180.html#ahe+dayamaya+biswa+bihari+school+prayer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001d61.bin
fd9cfaa509046c134848cda4cd45aba3a69d14eb347222d8ded67b6256054673		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D61 6800 bytes

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