Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60f6ded81fad66b…

MALICIOUS

PDF

39.9 KB Authoring application: PDFBox
MD5: e20fd015f90a61f7209d8f41b68a0881 SHA-1: acdaef1e9acd50de46a23886017d75c371a50fcc SHA-256: d60f6ded81fad66bbd87e3102c10251bf29c66126210f592cbf397ae21520680
152 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, a technique often used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, though heavily obfuscated, also contains many of these URLs, reinforcing the link farm attack pattern.

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://styrketraningsprogram.weebly.com/uploads/1/3/0/2/130273766/e54fc3.pdf
    • http://jeromesbistro.com/uploads/1/3/0/3/130323453/4860927.pdf
    • https://wagixetibe.weebly.com/uploads/1/3/0/3/130379466/fevugi.pdf
    • http://darawar.globaledumap.org/uploads/2020/01/28/2922359.pdf
    • http://duf.321cero.net/uploads/2020/01/27/jutabenopan.pdf
    • http://mustangsfood.com/uploads/1/3/0/5/130539885/lawobawe_xogobowafuf.pdf
    • http://crimsonshadowpack.com/uploads/1/3/0/3/130313458/juwusamefiw.pdf
    • http://pagefixile.diet-helper.club/uploads/2020/01/28/54e29c75c.pdf
    • http://kaj.sellfarma.xyz/uploads/2020/01/29/bisononemivis-towuzirolo-kosulufewolax-nesesemupowabi.pdf
    • http://healthcaremanager.net/uploads/1/3/0/5/130541208/sobivi.pdf
    • http://nuze.mickrokredit.loan/uploads/2020/01/28/tuneseb.pdf
    • http://eyes-optical.com/uploads/1/3/0/3/130324011/belote.pdf
    • https://xekimanasebaje.weebly.com/uploads/1/3/0/5/130540085/4358324.pdf
    • http://mrsdsmithsthirdgrade.com/uploads/1/3/0/5/130543462/jikaj-dopodimefixob.pdf
    • http://mesfsl.com/uploads/1/3/0/6/130621060/lekiserurotikifipama.pdf
    • http://morganadvisorygroup.com/uploads/1/3/0/4/130476458/3841259.pdf
    • http://foza.radostnasha.club/uploads/2020/01/27/5711603.pdf
    • http://mdhomelab.com/uploads/1/3/0/4/130435711/4eafaeae604.pdf
    • http://weddingcakesbrisbane.net/uploads/1/3/0/2/130272981/tedezutoguxiba-legepe-xelomu-fezolo.pdf
    • http://woxarapa.kinodreamg.icu/uploads/2020/01/27/dojugozeru_lowamekotinibag_mibaxoz_ropewax.pdf
    • http://mindforyou.org/uploads/1/3/0/2/130270892/130270892.html#a+noun+clause+as+a+direct+object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001627.bin
2400f43009125a8b966a550647b7597a45979d86611dcdffb8273925797e28d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1627 7832 bytes

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