Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9264318f3e98f6…

MALICIOUS

PDF

105.8 KB Created: 2021-07-14 01:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1452cead4f2e3f9300281ee14fce3823 SHA-1: d72a53c4f94588df9ee2426843375b409b360fb0 SHA-256: ba9264318f3e98f6a9a98e441fb4b91fd0e44b5c7583f7faf789456ed851fec1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution attempt. The document body was unreadable, but the presence of numerous links to potentially compromised sites strongly indicates a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bba6e7b0f1---71065043264.pdf
    • http://dienvietbac.com/uploads/files/18501113386.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad9075a9c2---vuvukuw.pdf
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/df77sc7qi83nt6g8dfu9heuhj7/mavudaliwolin.pdf
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/4a360a7bfd0a43e096c8c249bd984dcb/4484947157.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//43600940066.pdf
    • http://www.alfapilates.pl/upload/file/ziluf.pdf
    • http://zonwering-belgie.eu/ckfinder/userfiles/files/49917433998.pdf
    • http://aksaaydinlatma.com/img/editor/image/file/xefunetuko.pdf
    • http://aimic.com/userfiles/file/salar.pdf
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/8011bc08b280622a5ad9fd020cb9d346/86819210629.pdf
    • http://asupuro.com/upload/save_image/files/zowuxis.pdf
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/50bfed39b990a367d3c1a0ec843f2a46/zumofivasozux.pdf
    • https://arket.io/wp-content/plugins/super-forms/uploads/php/files/f339hk15htrmakap0ej8vah9c5/56868943266.pdf
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160edc0a8af85e---71540949292.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839efd10e87---vasopudabex.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bb340022867---95195845209.pdf
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/42n5pqodekmam41svtdre6hog9/dakuzugunevafonumet.pdf
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/5d1144fa5972050bf00e9d58d11892cc/sovoritegekusifelupela.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b061403a5fc---38240664803.pdf
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/luwepovogo.pdf
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/86289d2cbfddab6a1b0e189497f8c200/28301158107.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6dee0abc24---burozosira.pdf
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/bfc30ks7bnm4mc1vger364cd52/surox.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=capsicum+growing+at+home
    • 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_off00012725.bin
b608f81a9ab47ce00a3cabad8fb41d1ed4b38d09360ed83114790ed9a67e63f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12725 20848 bytes
font_01_sfnt_off00015bdf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BDF 16792 bytes
font_02_sfnt_off000173f6.bin
9b576838de0c17b33bfb9f6224e86077c1a6970235d245e88065f56b0c69fd32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x173F6 10992 bytes
font_03_sfnt_off00018d64.bin
8dc9bb71d11da9de4f2120918a4982e24b915762e33769e1f772c3f17595775f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18D64 2908 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.