Malicious PDF — malware analysis report

Static analysis result for SHA-256 7379f38a07b5940d…

MALICIOUS

PDF

55.9 KB Authoring application: PDFedit
MD5: 98fb88bd5d682a78f032e7d47ddfebcf SHA-1: 00bfb6717ff3cd58d569860c933596e19aa671cb SHA-256: 7379f38a07b5940dd1d9fd8336e1123320308ffeabb2483dd5287cca46bfb6be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files, indicating a link farm designed to distribute content or potentially lead users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. While no scripts were explicitly extracted, the structure and heuristic firings point towards a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.candicemjewell.co.uk/uploads/1/3/0/6/130604561/4293667.pdf
    • http://homecook4you.com/uploads/1/3/0/3/130379365/rigemo-xuvemuxaku-punem-jilururavuzuki.pdf
    • http://lifeofthepartymidland.com/uploads/1/3/0/2/130288447/78386ac75.pdf
    • http://moniquewgyoga.com/uploads/1/3/0/5/130540293/gesukugoromol.pdf
    • http://mamacuervo.com/uploads/1/3/0/4/130478347/4d91c4c90d5fb.pdf
    • http://socalseas.com/uploads/1/3/0/4/130476873/5041656.pdf
    • http://ariana-johnson.com/uploads/1/3/0/7/130775784/relobixibeg.pdf
    • http://studioprbozeman.com/uploads/1/3/0/5/130539105/zomugu.pdf
    • http://liqourlawvt.net/uploads/1/3/0/6/130605111/915e2a718d.pdf
    • http://pintanbastos.net/uploads/1/3/0/8/130813714/2d4944ecbf7c9.pdf
    • http://mibias.net/uploads/1/3/0/4/130477090/vefisusun-vopigepixusafe.pdf
    • http://brown-sugar.com.au/uploads/1/3/0/5/130551390/d696b39024.pdf
    • http://goodn3wsgirl.com/uploads/1/3/0/7/130738919/51986dfd.pdf
    • http://centraliowa.org/uploads/1/3/0/6/130622103/berud.pdf
    • http://workone.info/uploads/1/3/0/4/130436483/tuxonemigaje-kokodebepuw.pdf
    • http://myrocketflow.com/uploads/1/3/0/2/130289304/4542762.pdf
    • http://ourbloc.co/uploads/1/3/0/5/130589412/goxepizeniz.pdf
    • http://www.jazzmoondogs.com/uploads/1/3/0/2/130289754/130289754.html#sinhala+unicode+keyboard+download
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://sinhala.sourceforge.net/
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
    • http://www.gnu.org/licenses/gpl-2.0.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002692.bin
ca889182d22413b1a5b6446cd5d954c095bfc2c8b2fec1022b19199100617195
pdf-font-stream PDF embedded font (sfnt) at offset 0x2692 16028 bytes
font_01_sfnt_off00003ccf.bin
ae9e52f41d8931315c481267074c29630cb391dee04aee2f5a937fd52d1d5226
pdf-font-stream PDF embedded font (sfnt) at offset 0x3CCF 27592 bytes
font_02_sfnt_off00007df2.bin
f0f4eafe07856adadca112f4c8ac09231ae3f30076f8f04283eff985b512b4e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF2 8236 bytes