Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6afb99e4f9dd2a…

MALICIOUS

PDF

85.6 KB Created: 2021-03-14 09:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 626fab5cb7dbbacb0391c24b3886f7d8 SHA-1: 1a9747f32503ef8825a0411f16962f8a7c0dba32 SHA-256: 1b6afb99e4f9dd2a337f8ac6849944e51acdced8daa30d94d660b8a50e6184ce
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'soxebez.ru', which is likely used to deliver a malicious payload or redirect users to a phishing site. The document body, though heavily obfuscated, suggests a lure related to apartment guides, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/wix?keyword=knoxville+apartment+guide+knoxville+tn
    • https://static.s123-cdn-static.com/uploads/4501367/normal_5ffba34e66d62.pdf
    • https://cdn-cms.f-static.net/uploads/4412588/normal_60209cd0a4b0e.pdf
    • https://cdn-cms.f-static.net/uploads/4403687/normal_601a1c839e329.pdf
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5fd149ffbabba.pdf
    • http://tufuwavaziga.mygamesonline.org/sony_wh-1000xm2_vs_wh-1000xm3.pdf
    • https://cdn-cms.f-static.net/uploads/4480414/normal_6032757f55f3e.pdf
    • http://sunazeremitiwu.mypressonline.com/garmin_vivofit_jr_2_bands_canada.pdf
    • http://pemojubeku.iblogger.org/37212278390.pdf
    • https://cdn-cms.f-static.net/uploads/4488806/normal_5fdc407231e24.pdf
    • http://jijuduli.mywebcommunity.org/java_8_tutorial_tutorialspoint.pdf
    • https://cdn-cms.f-static.net/uploads/4371247/normal_6036357dee7e7.pdf
    • https://cdn-cms.f-static.net/uploads/4463788/normal_602767f334c34.pdf
    • http://kunabote.22web.org/kavabipinutive.pdf
    • https://static.s123-cdn-static.com/uploads/4416154/normal_60003acf27fa4.pdf
    • http://vijepuwobewi.mygamesonline.org/adjektiv_lista_p_svenska.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jotudokizer.onlinewebshop.net/dewugonijugoz.pdf
    • https://s3.amazonaws.com/vuforewebub/belkin_n300_f9l1002v1_driver.pdf
    • http://jezevenakos.myartsonline.com/14028807909.pdf
    • https://s3.amazonaws.com/bawalidamovidud/tabewuduwanosonagami.pdf
    • http://ragejifi.epizy.com/41311657523.pdf
    • http://zogufisuru.epizy.com/my_evod_battery_keeps_flashing_3_times.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e842.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE842 6744 bytes
font_01_sfnt_off0000f927.bin
8fccd7143d85e1f110b0bc697f42d791e8ceb4c8991a238a1d9ebc190c662ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF927 5264 bytes
font_02_sfnt_off00010b01.bin
5de7e13c5c4ab684861485822585898d639f5e3c4e778cef0b868dfeb7eaab12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B01 12008 bytes
font_03_sfnt_off00013180.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13180 16204 bytes

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