Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d01fd912fc248e6…

MALICIOUS

PDF

86.4 KB Created: 2021-09-01 05:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1d7c20c9f8d18162cebd1b0bf99dfd53 SHA-1: 688d6d4599bd3be02ccfa9b8adebaa56a771af8e SHA-256: 0d01fd912fc248e640c04ba805701e2935af0aad63473a6b5cf6c3419616b0bc
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised WordPress sites or disposable domains, indicating a link farm designed to lure users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://tieclangman.com/Images_upload/files/97744323584.pdf In PDF document text
    • http://beloezoloto.ru/userfiles/file/xeluzubijaviturapuxado.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/25041287844.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/4416e93aa9cb23ba4427cce4a5fee425/jerumefujusulirilarutobo.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/daajj8dkgi4mjgq92pmgkfgd7n/nifitazoduzanavafe.pdfIn PDF document text
    • http://wacommerce.net/home/integrity/public_html/ckfinder/userfiles/files/22988853339.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/n09mchpubhrcr72f8sml1fvu8r/lefaper.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/607e5659803677987c91a5255d206291/77932559076.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/kamuvisiverate.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca9fde4c75---25928506385.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085a1e2c7336---lemojovamolojuwidi.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160cbe6c719cd3---5371783386.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/59336379060.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/c09ff9652b1363a803bda9336ceab4a4/37665715175.pdfIn PDF document text
    • http://win-sonic.com/kida2018/ck_imgs/files/jidabop.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/55820425912.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/78263845256.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/wesululotijegivijanimunob.pdfIn PDF document text
    • http://thomasgearon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/7547081783.pdfIn PDF document text
    • https://tidaksusah.com/contents//files/46289466696.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/d3cc1408541f041191433529884c0d50/senedijepozuwukadujo.pdfIn PDF document text
    • http://escqatar.com/uploads/userfiles/file/file/vomujugofufaxijelomanij.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/167b3703b588662101ba2525231f3de0/fekizuvavapak.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=wizard101+how+to+get+open+chatPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 18896 bytes
SHA-256: 2459c5c8f48a5c65c90f8092c167a75a5d4655fbd5d3cfcdaa62e820543ce2fa
font_01_sfnt_off00011a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A56 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001326d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1326D 10892 bytes
SHA-256: 1c31104b88056f6b71a32f5c11e4202676ad59140b0d013034f7382ca8440054