Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7468ddf8cffc938…

MALICIOUS

PDF

43.7 KB Authoring application: Mobipocket Creator
MD5: c5af5730537d5ccaa320fedb4d9ea2d0 SHA-1: 6eded28ae697d61ae3dea671f8480d0f708a7f32 SHA-256: f7468ddf8cffc9387f2734fd167714ba3e658b3c4d9aa59635e220ef8d1410d8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This 'link farm' technique is commonly used to distribute malicious content or conduct phishing attacks by overwhelming search engines or redirecting users to harmful sites. The ClamAV detection and ML classifier further support its malicious nature.

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://mirrorsofgodslove.org/uploads/1/3/0/2/130289478/f8f6f.pdf
    • http://delucaconsulting.se/uploads/1/3/0/7/130776812/rozevozunofo.pdf
    • http://balticsportsciencesociety.com/uploads/1/3/0/7/130775143/c4cd2.pdf
    • http://ariadnaeg.com/uploads/1/3/0/7/130775462/nazubasukesumovaxowe.pdf
    • http://denvermetroprotocols.org/uploads/1/3/0/5/130540661/satonenubisuj_raludipoxobaduv_xisexozuk.pdf
    • http://bluethistle.agency/uploads/1/3/0/3/130324270/lojefabunaruxetowixe.pdf
    • http://marilynroyalselectronicportfolioforintegratingtechnology.com/uploads/1/3/0/6/130621292/5724357.pdf
    • http://yessicafandinofiore.com/uploads/1/3/0/8/130813301/ecf89b1974cff7.pdf
    • http://susanpultman.com/uploads/1/3/0/5/130589165/koredosefobedo.pdf
    • http://mwavizi.org/uploads/1/3/0/5/130551745/6692069.pdf
    • http://diymaniacs.com/uploads/1/3/0/2/130287493/nikegafiwa-zoxadulexesibov-miberovasonegi.pdf
    • http://melbournehotelplaceholder.devsite-1.com/uploads/1/3/0/5/130543472/130543472.html#autocad+house+design+files

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c74.bin
16374c43fefb3fb406266acbe16aee7d7122405634c1b68ba02c6c95ae4378ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C74 4196 bytes
font_01_sfnt_off00003918.bin
c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3918 16092 bytes
font_02_sfnt_off000050e8.bin
b6c87593ba57a2e47d2dcf7cca8f7cfe0da88318755580964e358061137ddd35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E8 8724 bytes

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