Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1ea04477b46a5f…

MALICIOUS

PDF

38.1 KB Authoring application: GIMP
MD5: a1f41cef31c221c70167264c2980ddfa SHA-1: 3c5addf5ebd469624c987387e77c4f20ecfa229d SHA-256: da1ea04477b46a5fabf5c3b13fc27e9941476c2025291bf51a3c8108632e0ab6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to direct users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body itself is largely unreadable due to encoding issues but contains fragments of URLs consistent with the link farm heuristic.

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://lievly.com/uploads/1/3/0/3/130312925/kafetugategutojusak.pdf
    • http://distribuidoradealimentos.net/uploads/1/3/0/8/130813601/wewenedote.pdf
    • http://endofthecredits.com/uploads/1/3/0/5/130547728/pikixoteri.pdf
    • http://nikonicreagan.com/uploads/1/3/0/6/130639227/koluw_togodegofubad_nufelaxipamof.pdf
    • http://mysummerwithjack.net/uploads/1/3/0/3/130313784/romikofuvaxote.pdf
    • http://virtualstreetcorners.com/uploads/1/3/0/2/130271121/xusosegozen-xifekirefasev.pdf
    • http://coachcollinsfootballcamp.com/uploads/1/3/0/3/130379488/3972187.pdf
    • http://gemalchemist.com/uploads/1/3/0/2/130270740/e74ef1b5.pdf
    • http://mx.mscott.info/uploads/1/3/0/6/130639513/gawubunoralipo.pdf
    • http://splitfingerstudio.com/uploads/1/3/0/4/130476974/4a89f9.pdf
    • http://nataliahermida.com/uploads/1/3/0/6/130604109/7263742.pdf
    • http://meerreport.net/uploads/1/3/0/7/130776367/tozup.pdf
    • http://sideoftheroad.life/uploads/1/3/0/5/130551554/poxagama-jexomo.pdf
    • http://bitter-buffalo.com/uploads/1/3/0/5/130551718/sopuzizevimo_nafuvegi_figokadegebov_pojupope.pdf
    • http://newedgepartners.com/uploads/1/3/0/4/130436244/b17ac047c60b6.pdf
    • http://confias.es/uploads/1/3/0/6/130621850/00e4a6b9491307f.pdf
    • http://mercyscleaningservices.com/uploads/1/3/0/7/130740187/rabaju.pdf
    • http://alohahemptuary.com/uploads/1/3/0/5/130551898/lopibajakivokotatedi.pdf
    • http://mrhillchemistry.co.uk/uploads/1/3/0/4/130476657/xevebesalowamujanav.pdf
    • http://6iijoi.bdgct.com/uploads/1/3/0/7/130738831/130738831.html#aquaponic+fish+tank+reviews
    • http://mercyscleaningservices.com/uploads/1/3/0/7/130740187/rabaj

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036f0.bin
436a45dd3a789766e04fafe04749fb74472a9dbeeb28a160dee0ca8c2abcd1ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36F0 7716 bytes

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