Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ab3ede776faa41…

MALICIOUS

PDF

87.7 KB Created: 2021-06-25 22:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c60b53c752f2096eed4bea4b95c93841 SHA-1: 3abff731267a032a38f86b1b1afc9dd1a49836b3 SHA-256: e2ab3ede776faa41159fa8957b570a89e355afaef606ab0c847a26bc7b54bc9b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external resources, many of which are hosted on compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, suggesting an attempt to distribute malicious content or phish for information. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/f2417921777abaeb90a5f66f67478b14/lononetarixokefe.pdf
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079016b1a908---51816046806.pdf
    • http://benhvienlaptop.biz/userfiles/file/14081673504.pdf
    • http://musicupclose.com/clients/f/f7/f7c291dfb329fbc33054893077acf627/File/buvederev.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/4ec3a32f91c7b8d9c2d2888b1f34afb2/60408168488.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe42c5ca3a---tajujobixudawexilobus.pdf
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075fdafcb18d---10934579032.pdf
    • http://thankschicken.com/uploads/files/wusuvijigulonutimufa.pdf
    • http://laduses.nl/image/file/62989089421.pdf
    • http://ccswcd.com/userfiles/file/sulagibiru.pdf
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd70872db6---tatateguxejakesu.pdf
    • http://teusz.pl/UserFiles/file/fagafifutebenurevexerozap.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ac5776ccf---totirudozetaniwezanu.pdf
    • https://associazionedynamica.it/uploads/file/15961451573.pdf
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b9483d6e48b---puregub.pdf
    • http://accessiblevehicleservices.com/userfiles/file/87074252938.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be31ad40c5a---mawifibates.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866a8dce1c7---gomonozeketeviji.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16099ffef4520c---15182674386.pdf
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/a857ffbc5962fa32a138a49f55d71adf/xifebak.pdf
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e44a686a23---26335712735.pdf
    • https://menu2uplus.com/images/file/88876633207.pdf
    • http://accessprecision.com/userfiles/file/33468082836.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d120491af0---metilumevumaxiwoziz.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d51154953---didakanenala.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=old+to+new+house+renovation
    • 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_off0000f0b1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 16792 bytes
font_01_sfnt_off000108c8.bin
54594c1a0df067185e38f20df577826ba2b249aa961e30574bf9d991ab6e9368
pdf-font-stream PDF embedded font (sfnt) at offset 0x108C8 10620 bytes
font_02_sfnt_off00012109.bin
ca3dfcefb23e316bc6f87ff1a4415271a99f211a032c7b71a862154aee1f5222
pdf-font-stream PDF embedded font (sfnt) at offset 0x12109 19064 bytes