Malicious PDF — malware analysis report

Static analysis result for SHA-256 3368bb079e94bab4…

MALICIOUS

PDF

97.9 KB Created: 2021-08-06 23:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 254c01b3e8701bd124a18293d98ab405 SHA-1: 00920ce9ff0212de23a401d5e7d14e2a6f5b9823 SHA-256: 3368bb079e94bab4bcdadd0024b86d45917dc0931037811ef29d1699d0df4e1a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites, indicating it is designed to lure users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm heuristics point towards an attempt to redirect users to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7676

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14b60b7269---dutido.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/efcf879ae41a67603259ccd91a3ef535/22915709826.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/9l9ru45u731d76cb500nb203nh/79157368539.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16074ba89d1f56---zadexifodegenikemorolu.pdf
    • http://teplospectr.ru/images/files/wuseb.pdf
    • https://farmaciasacoor.com/site/upload/file/radazexediwu.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/175779d3a72d14374a79b8c288f0dc83/tejitebobojofo.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/24525d88b3a7e61375067bb5f2d3b1d2/23403042399.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa94be70548---zodolawurubipip.pdf
    • http://gerocuki.hu/user/file/jitinuruludixibekanifefa.pdf
    • http://parkettes.org/clients/b/b3/b30d687fb0e6fb0c44210170e51784d9/File/zotulakuvaniwuxag.pdf
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/789306a1cbbd6b10fd8c0ac508740cab/fekavotiteka.pdf
    • https://bio86.net/fichiers/gevorofegime.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7819622d10---11837172429.pdf
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/108766119c00456746e6b271005402d4/95538640629.pdf
    • http://richmore.kr/uploadfile/fckeditor/file/36249680096.pdf
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160781734d6f1e---jukagigoperusu.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701aaf27d0f---negulaxifa.pdf
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/0mta8cbt0lejr71dqp5uds6bl6/lomoxogi.pdf
    • https://dbjadow.pl/attachments/file/80239216132.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccac105be9---99318656449.pdf
    • https://clubslotalmatriche.com/calcas/file/89875075882.pdf
    • http://szkolaprywatnaleszno.pl/userfiles/file/dojurotamo.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093d6b2941e4---wedezetapagorusalurivaf.pdf
    • https://vargyasnekonyveles.hu/kepek/other/file/podosumokajoje.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=star+wars+blaster+sound+effects+1+hour
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001484d.bin
d9e0507db8b56fa6d884dcce0c63b328d210a8369bf1d40f8288c79962411c2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1484D 17836 bytes

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