Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cc062476b37788…

MALICIOUS

PDF

90.9 KB Created: 2021-07-03 04:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0720580d4699dc8f7e9aff601a741ac6 SHA-1: 84afe35669df3a3916f9b854d90dcd841586219c SHA-256: 30cc062476b37788192ca32309dbc0ed9f93877176c09a3505c7483c16bbd4dd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification strongly indicates malicious intent. The links likely serve as a link farm to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • 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
  • 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://philabc.ru/uplcv?utm_term=ectopic+after+ivf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/773d6f36a018de5415d18c81d21fe5f8/timizufekigoxakulajibo.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072c5d8ea4df---penupeku.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f78e30c6e---felagizixazijawulesi.pdf
    • http://mdbim.pl/ubezpiecz/obrazy/file/jozazisobafekisel.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/61ab4a2f76953c0b0db17a7967c99339/goritakogivup.pdf
    • http://ersatzmonitor.de/userfiles/file/kabidakisidegibe.pdf
    • http://hghs61.com/clients/9/98/9814c5f28b4e93efd1f74733a9fd6b0f/File/8154075767.pdf
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/d6oh76dft4jp254j16595ks0aj/94536073733.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608163ad2639e---sijab.pdf
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2682c6d4a---tejupujujuda.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/51fcfaca88f3b5839c4c72b8257b3861/46300366829.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd243d7cdf---13868995266.pdf
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/49770811772.pdf
    • https://szekszardportal.hu/userfiles/file/fabuxovumugaxu.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16093f9dda0235---74039430579.pdf
    • https://bcbc3399.com/upload/files/toxefamo.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/ab071ccc2f6d7ebcff6124a9f48fea6c/jonuzixedekagesakivupom.pdf
    • http://ytovietnam.net/ckfinder/userfiles/files/tigibi.pdf
    • http://cristal-in.fr/userfiles/file/lelonefusov.pdf
    • https://alate.org/admin/fckeditor/editorfile/10768919147.pdf
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dbc49e3757c---ruvaguzosigufizibawevone.pdf
    • http://myconnect-thailand.com/image/upload/File/37066403858.pdf
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/79100184194.pdf
    • https://actor-conseil.com/files/file/wupimaz.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e805f5c5d0---luborupisamidejafidibufof.pdf
    • http://travelshops.pl/userfiles/file/70141047555.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001028c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1028C 16792 bytes
font_01_sfnt_off00011aa3.bin
4fdb9e1378087122f070b972b871f02c3821e3e95357dbe02e178142dbda98bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA3 10204 bytes
font_02_sfnt_off000131ad.bin
948c57b580123471f958ac12b2a585ccbc25b836b6ce386ecd2c86cfd6e1d8d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x131AD 17100 bytes