Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eeee1506f766a17…

MALICIOUS

PDF

94.4 KB Created: 2021-06-28 18:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8c3776bf88259c55ba7373bf5c9efb6d SHA-1: 19655ecd4915f2b59b4cf1a7a70e69ca6029ea3d SHA-256: 1eeee1506f766a1778897af81d6e4fc932bd616f2914634b71e47212e4b2c7f2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute phishing content or malware. No scripts were extracted from this sample, but the presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest its purpose is to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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://garglob.ru/uplcv?utm_term=month+of+elul+meaning PDF link annotation
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160afcf80cb7f5---44585152431.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acfae7ec8c1---18174217872.pdfIn PDF document text
    • https://seerupit.dk/assens/file/lalaremafedopilemor.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99368099f9---vibekirosokivujifuzezop.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/kovub.pdfIn PDF document text
    • http://imaginove.eu/data/Files/fogasatuvizemakosoxaxetus.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/vegodupogokefarinoga.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdeaafb62d9---wurelozimavesewexijaxonof.pdfIn PDF document text
    • http://imbirimbir.ru/files/xusisezujewogokise.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f0b891cc8---nosafojukigenaleg.pdfIn PDF document text
    • http://pspectr.ru/userfiles/file/38234951069.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607861f2a299b---todujafidike.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/53svnbplljsok05jl7s4u52rac/52041940908.pdfIn PDF document text
    • http://trendybiz.in/usersfiles/file/56354436461.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/afbdbacded5a3d36cd768efe898d108a/venupeguw.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160d6145bc4f4c---58165730890.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/jikotenarurato.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16092c05636af8---zizafesazunojenol.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/gilikogepu.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/pisipoti.pdfIn PDF document text
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/af04a68a4883310d642926e124cdc1bc/xazaxuvanud.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/hhqt7pslf5mojvhp01e4iqd3h6/30434023580.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c41fbb1f319---62913773928.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae580804a62---38256399240.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED20 17504 bytes
SHA-256: c562f213d69b3c74ce2831aba69dbad4afc1ad4e78b399d2da9199d05d70d7f5
font_01_sfnt_off000107eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12002 10484 bytes
SHA-256: 55e6172a23d0fca7e09bfa85f1eb0b9d189c4e60dcb8f96e83c02f20566165ad
font_03_sfnt_off0001379a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1379A 19492 bytes
SHA-256: d74ddf302a054b9f5de01e2eabc5d11ea4065304b384e232530c9cfbf2c9a0ef

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