Malicious PDF — malware analysis report

Static analysis result for SHA-256 56aff718ea090ddc…

MALICIOUS

PDF

94.5 KB Created: 2021-07-05 20:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3a734a1aed750fe622e1012bbfe0a882 SHA-1: 3650e5b0d2abeacfb4f3beae3cf5158285a56700 SHA-256: 56aff718ea090ddc239ebb2f2c133592774f59300ca89ba375bbaee468f2c817
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. The presence of numerous embedded URLs, many pointing to suspicious PDF files, suggests the document is designed to redirect users to malicious sites. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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 http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/gelisowu.pdf
    • https://unosms.us/userfiles/file/sulamejarebaxujitofa.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16097571856c3b---desoguxajopusu.pdf
    • http://cherriestattoo.com/ckfinder/userfiles/files/42403601066.pdf
    • https://adsbudget.net/userfiles/file/jumefasopewafuwowekazed.pdf
    • http://interel-rus.ru/test/sites/default/files/file/11928428917.pdf
    • http://flomojapan.com/upload/files/putadapiw.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c79a39c9029---kumesuvuwominegekogomi.pdf
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160841e0f1d434---19159246966.pdf
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a79f956aafcfa9f0387dc0656a609c80/2098534010.pdf
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/7495229b429cab26d4c7741a93201d45/waruxotizafetowo.pdf
    • http://ladyqueen.it/userfiles/files/zozejalozefotituganovenin.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/vigd45rqhmq13g887jkl6gibdv/fubomevoponu.pdf
    • http://firegallery.ru/img/upload/vusanalekizelirebadi.pdf
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160af8063029dc---93964111309.pdf
    • https://martensmgt.com/business_school/uploads/file/37977589426.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be451f83159---nenaturofozegukuvesuga.pdf
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160caa6ca3897d---pibutisuxovasurosuxa.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba97854758---sepuwavonowuxanik.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d3ad83469---84010217759.pdf
    • https://arhometutor.com/userfiles/file/xuzesemez.pdf
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/74547631956.pdf
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/7b9dc9453e534db1aa46e8658b05091c/ganoronuvom.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=an+ampere+is+a
    • 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/
    • 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_off0000f070.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 16792 bytes
font_01_sfnt_off00010887.bin
ba994b475aff9fbade7d08146c324830b6fa1bb46f8220b7abaa12d7fc365947		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10887 10128 bytes
font_02_sfnt_off00011f10.bin
547416b4464f6e5a9d83786777998bff5992111ec91bf912e57973443c36b74a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F10 20328 bytes
font_03_sfnt_off000155f9.bin
f1dd762ab392e50f302e08a59ae5f665ce8387c4127daba6547abcc2f88fc7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155F9 16384 bytes

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