Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e02328e3617e7db…

MALICIOUS

PDF

42.2 KB Authoring application: Nitro PDF
MD5: e1143f29fe3740e3e801cd08cd48ffb2 SHA-1: 817461eb397d0ab3e86442ad1a3b4774557d63a5 SHA-256: 2e02328e3617e7db77eb4f74adbc38f007501e43c7a4ad235dfd7993687a698b
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution via the linked PDFs.

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://christinebrozowskireviews.com/uploads/1/3/0/3/130313345/57c2dd0877cb.pdf
    • http://nitro-networks.net/uploads/1/3/0/2/130273987/zawelimil.pdf
    • http://clucktruckportland.com/uploads/1/3/0/5/130544078/xudijemob.pdf
    • http://earthspiritpress.net/uploads/1/3/0/4/130489331/ddeb3f9c7ab6.pdf
    • http://thesercystore.com/uploads/1/3/0/4/130435638/1595247.pdf
    • http://montessori-lomas.com/uploads/1/3/0/3/130323362/bumufibajas_wikoku.pdf
    • http://parallaxphotography.net/uploads/1/3/0/9/130969631/526dc7c6d41e87.pdf
    • http://doctoraneela.com/uploads/1/3/0/3/130379676/2901639.pdf
    • http://mark-watts.co.uk/uploads/1/3/0/7/130775606/xowefefar-sibizen-zalesaderitu-gasovo.pdf
    • http://www.earthlingsof.com/uploads/1/3/0/9/130969939/ponubibo.pdf
    • http://rollinghillsrvpark.com/uploads/1/3/0/5/130543366/72c4a3f6cbbac92.pdf
    • http://www.careeractualization.com/uploads/1/3/0/7/130740504/afc71374ba.pdf
    • http://kitschorama.net/uploads/1/3/0/4/130489228/04b041.pdf
    • http://autodiscover.stephaniewestliterature.com/uploads/1/3/0/7/130739120/nesadalasigupab.pdf
    • http://www.solomums.net/uploads/1/3/0/4/130488067/2689168.pdf
    • http://g9bwu.bpmtc.com/uploads/1/3/0/6/130639904/130639904.html#cyclohexene+react+with+bromine+water

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003dda.bin
95f509b9c9de872b5fa7286e6da88ae0510c4cd263222abb43c529647ff9b703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DDA 2780 bytes
font_01_sfnt_off00004a36.bin
39778a99f62e38fa5cca3c29df7215aa668020e7c04efd3e3e120a13245628b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A36 8004 bytes

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