Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef0ee30d8e69b57…

MALICIOUS

PDF

88.7 KB Created: 2021-09-02 20:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c59324581bbd548e48a06caa6566e6ec SHA-1: c91e0ccced5eac3c3cceb71b8bb9d32f1f3882c1 SHA-256: 2ef0ee30d8e69b578f98c79345b548783ad99ee484a0f3cfc3e30cb8eb8d9bee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. These links are likely intended to redirect users to phishing or malware distribution sites, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984550e78b4---bozurimematugegoxuvutid.pdf In PDF document text
    • http://dlevitin.ru/fck_editor_files/files/tazasulazedetedujawakolip.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/98848928123.pdfIn PDF document text
    • http://lifeisartfoundation.org/sites/default/files/images/userfiles/file/91771603180.pdfIn PDF document text
    • https://dm288.com/slicice/file/525714497.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/kgtusq8l9klf1tdrua6c24d7vo/worifemapejaxosejexe.pdfIn PDF document text
    • https://www.apollopowersystems.com/wp-content/plugins/super-forms/uploads/php/files/525b38657316af2309a3341f6aa29761/jakidorofufizaparuda.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/rabetonani.pdfIn PDF document text
    • http://meijialx.com/ckfinder/userfiles/files/tegipabuwibitulesegal.pdfIn PDF document text
    • http://supragyn.cz/userfiles/file/74567632737.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1105c45fdc---43351633499.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/989695030ae46be83571511f9b03f40f/10174949200.pdfIn PDF document text
    • https://adtw1.com/ckfinder/userfiles/files/32192145590.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/dugokefirexi.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/i77s0u552mcelt2b8rh50cf8l1/patazegozegasuwanilixujab.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/8392e183a0997a7203601334c5f9dff9/36621483900.pdfIn PDF document text
    • http://mvhs78.com/clients/68382/File/25242121516.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801e54d8060---waletagupowugakokeloteza.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/zuxoxawu.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/20b38e28407898a4128b29ea1837a719/59419779630.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084c82a0ea9a---92167611885.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/jovubojakikisi.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/44661404106.pdfIn PDF document text
    • http://biosystech.com/pdsFck/file/wamagumura.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=general+english+pdfPDF link annotation
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABB 10596 bytes
SHA-256: ec8ec13b3ef5a60a064d7a9d7b19b487988f9f7b8612d78319541d6e5ee6f7a0
font_01_sfnt_off0000e28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28E 1732 bytes
SHA-256: cc9aa9d10d6f336345dda96c648cf1cebe6fdaa1cf59576acfec5bb48f04b3bd
font_02_sfnt_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000102d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D4 22724 bytes
SHA-256: f8154a06d922602cba7c89d3605a036618e105b89cd121c63f76241ed89f5b7e
font_04_sfnt_off00013da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA9 16360 bytes
SHA-256: dfc1b87ecb0630d9ab8f22f251ff8db9334b8972cab529572b61e2e26b485763

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