Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee5a68055a87f37…

MALICIOUS

PDF

108.3 KB Created: 2021-06-28 11:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 294d501cc4f2b24c88b70a9d1c126ba8 SHA-1: e1491293799214b29d59c9f4dc57335435b64774 SHA-256: 2ee5a68055a87f37036a741f7f8828d733bd2dd53e53368044546d33a929130b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous URLs, many pointing to compromised CMS uploads or disposable hosting, indicative of a link farm designed to lure users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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 http://fautographie.org/images/userfiles/files/ledab.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/8df2b970f8e994e5a97319eb068b1741/51720878785.pdf
    • http://asupuro.com/upload/save_image/files/87527385805.pdf
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2a75adc76---mepivupopojulokavozam.pdf
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/528b550fc20dc07f4065dba187142394/48838581924.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/3c217b2b18540a229e46cd424e09935d/gunoruzerowum.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a91e850dbfe---rojividipiwus.pdf
    • http://ildungrice.com/fileupload/fckeditor/file/3923316786.pdf
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/h5ang3ulrv8erf50ec4m3i8b9t/66524468263.pdf
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879ea0195eb---tagoxowi.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/98458fb05d19e75939d736dbf1190fdd/18138206302.pdf
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608750e737a73---12975912390.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/e4df5ac3e247df91dc3ef777a2fd9a87/89174849074.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/8m3vtfaoqunhfq39j5i7tev2kg/37392307389.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e21e7dfa9b---lafurijasugonigeko.pdf
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/ab9a4f98077381fd99164f40fceec8ad/gulipared.pdf
    • http://snnet.kr/board_pds/fckeditor/2021/06/file/81445104676.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf64063c62---jidawodinawu.pdf
    • https://vildmarksjagt.dk/userfiles/file/pobokigotaxexozaxokew.pdf
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/f8e470bcd26a3d4347039648b11e761e/23598442776.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ad04b32e57c---23521970747.pdf
    • http://aeronautike.com/userfiles/file/besipode.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/cc2ddknmndjs1fs16pjor5fr0c/82631539540.pdf
    • http://opakowania-loga.pl/zdjecia/fotki/file/31041515820.pdf
    • http://shihtzufurbabies.net/clients/d/d3/d383cf0c90cf2d2391705d5438694b4c/File/46219245564.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=meaning+of+chancer
    • 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_off00013ba3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13BA3 16792 bytes
font_01_sfnt_off000153b5.bin
30852442096088d976ee3ead8da774a3efc89c5afc6fadfe8afe7a6916051194
pdf-font-stream PDF embedded font (sfnt) at offset 0x153B5 17720 bytes
font_02_sfnt_off00017f90.bin
0b292b1e483f702560133835da5d7390461a2e2381297e23fac7af9b7afac6c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x17F90 2600 bytes
font_03_sfnt_off00018ace.bin
6bf3ed227ad276c96ce7c1bfcb8a58e014dddb9347625c7c517cb393adc6f3ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x18ACE 10296 bytes