Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef48669835a914e8…

MALICIOUS

PDF

121.2 KB Created: 2021-03-20 08:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c528fde21d04fb93293ce2eb05e52dd SHA-1: 6c6835660595e7fa6f411fff35564bd60ba10a22 SHA-256: ef48669835a914e80597d434b795a2a9bac632b55637bfbde739fa382113b339
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the URI suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9723

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://botokaw.ru/wix?keyword=bio+template+amino+short
    • https://cdn-cms.f-static.net/uploads/4487665/normal_603df9bb0763a.pdf
    • https://static.s123-cdn-static.com/uploads/4458148/normal_5ff803c90a3e7.pdf
    • https://static.s123-cdn-static.com/uploads/4411681/normal_5ffa07bae6918.pdf
    • https://cdn.sqhk.co/jumifokujuje/jejcUge/pakafikezezadesafok.pdf
    • https://cdn.sqhk.co/votawusebak/gfghjeJ/duxedebajazomuvi.pdf
    • https://static.s123-cdn-static.com/uploads/4481552/normal_5ff237fbdde2c.pdf
    • https://cdn.sqhk.co/tovipovo/gjigjdX/67652806472.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.thdl.org/http://www.thdl.org/Tibetan
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • http://fedorahosted.org/lohit
    • http://www.opentle.org
    • https://uploads.strikinglycdn.com/files/52d20d9d-81f4-4d24-9136-748e718c676b/best_frozen_cauliflower_pizza_crust_to_buy.pdf
    • https://s3.amazonaws.com/pewebopufupe/inteset_int-422-2_codes.pdf
    • https://s3.amazonaws.com/rixevozajixezos/55906218259.pdf
    • https://s3.amazonaws.com/pezofut/52624480180.pdf
    • https://s3.amazonaws.com/nafoxuda/3950840983.pdf
    • https://s3.amazonaws.com/jemisajoda/23699376419.pdf
    • https://s3.amazonaws.com/kizugokofo/horus_heresy_books.pdf
    • https://s3.amazonaws.com/resisuna/javatixuxitopofo.pdf
    • https://s3.amazonaws.com/resabomibogodaw/17210691234.pdf
    • https://s3.amazonaws.com/sevoga/22317196649.pdf
    • https://uploads.strikinglycdn.com/files/96d12fb2-2759-4b90-ae1d-73f428f7568f/nejef.pdf
    • https://s3.amazonaws.com/wezukep/2277650192.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/copyleft/gpl.htmlTibetan
    • https://gitlab.com/smc/meera/blob/master/COPYING
    • http://sinhala.sourceforge.net/
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
    • http://www.gnu.org/licenses/gpl-2.0.html
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 12

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b20.bin
db574e19d551294be674f6444504133f5ed764ca9417abd90079f6f3eb73496d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B20 6696 bytes
font_01_sfnt_off00011bc1.bin
29b259eaf349ac61a23541eb564545655ce7d79f48e7231f4678e23a0c983a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC1 2940 bytes
font_02_sfnt_off00012640.bin
2ef245528754317d014eb11b55e14f9e6a1a83701bcf6d9ddf5e0cffc5a02bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12640 5108 bytes
font_03_sfnt_off0001376c.bin
c727beb5c06806200382e0344014d86dc8178e88da1e1c7fb26b22165a9009ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1376C 9872 bytes
font_04_sfnt_off00014be2.bin
df1e5534249a6ad5194b0d33387f68561ca38440506768bef5bc0be2f0cfc4bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14BE2 2392 bytes
font_05_sfnt_off00015576.bin
e61cf0c6a71cfd2a0adf4c12559291db356d9c0b3c431b5f77a3f6727d9608d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15576 2152 bytes
font_06_sfnt_off00015e4c.bin
cda0033674512566ced026b07722695af3b73d477552dda5d9e2ffb793476e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E4C 2768 bytes
font_07_sfnt_off000168d0.bin
3eea8215b5db3c305b592f3272fc1e77848bfb67198617ecc7b3d0cce8b3c3bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168D0 5800 bytes
font_08_sfnt_off00017760.bin
6f5b51209938ab83a3e97dbbc457eb277fdda9950e548dacb1755badbd3e77a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17760 2116 bytes
font_09_sfnt_off00018124.bin
3cf213a56055050543fdc0c12a8587c3768a42f85b5da026afe494bb655102bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18124 15152 bytes
font_10_sfnt_off0001b1e6.bin
c99efd5afbc9c56445f3533d4d83f3d51ea3a8d7794c7bfe312188babdffcd1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1E6 16640 bytes
font_11_sfnt_off0001c933.bin
f7f0bb8a97fadc56fcd85d983b5262bfc750818a2e1e528e6b3e1a0d00048c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C933 2464 bytes

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