Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32e89c6554a5684…

MALICIOUS

PDF

89.0 KB Created: 2021-06-29 00:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f0e54ef9c08745c6eeebef0c7ef1bd93 SHA-1: b8ab62f78476e075628082651f24274abe2e7148 SHA-256: e32e89c6554a5684028e1c0da7e0b203defa263c1cc66e268db990672e2ee9db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://cgl.lu/userfiles/files/35660291105.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c75218c3aa---wanifev.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16080a0cba25b1---81531899875.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/69oa6gn42hu3elsgv2t69imjes/95935335665.pdf
    • http://3xlove.com/uploadfile/file/98004099298.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/81284cb0673c9a352de95f32d91ba002/jufusinojolotuwotupirat.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b31095baf3f---tamopodufi.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a6417df29---4800123791.pdf
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/145e119d9a95235778844e1552e005e0/61443444312.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160784ca918d26---nogarekexemoguzogunok.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e09dbb4562---88250888307.pdf
    • https://pima-alarms.rs/slicice/file/87020056281.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/dp92k644445lroikk3je7p8fj7/82798734772.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/e0vi514a7desbvu9602cpomsno/gizabiwukivasikofot.pdf
    • https://lawrenceyezersky.com/userfiles/file/danavimibub.pdf
    • http://campbellelectronics.com/uploads/lomagunomer.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcd3f01fb9---niganu.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/cbs1em1dlqr79bbdgnqgknn2o7/dunexi.pdf
    • https://transpack-krumbach.de/_upload_bilder/_filemanager/file/39002736450.pdf
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/4554d4da2656392c8d14f6cbf7d75199/69751555616.pdf
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/5398f43101467c1bbd9dfe3014ed4060/vitugi.pdf
    • https://kocarbon.vn/luutru/files/tomuzufiso.pdf
    • https://opsclown.it/ckfinder/userfiles/files/nudova.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b412c300378---53639611294.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=email+privacy+disclaimer
    • 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_off0000f7e2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E2 16792 bytes
font_01_sfnt_off00010ff9.bin
e48b47c6ca262c5aefc961d4d2dfa5ebd6d3d27323df98836bc39a81d603b533
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF9 10516 bytes
font_02_sfnt_off000127e7.bin
0095a8388d114368e73d3de32e89138fe22e74ff9f5722cba8fd159b577d6c78
pdf-font-stream PDF embedded font (sfnt) at offset 0x127E7 17524 bytes