Malicious PDF — malware analysis report

Static analysis result for SHA-256 2299d14f60b07fe6…

MALICIOUS

PDF

73.7 KB Created: 2021-07-04 06:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: cc274fb79f3d6e6b8c892e179701b5bc SHA-1: 816fb90d7afab7660e48c88891fd56cd12b58286 SHA-256: 2299d14f60b07fe620ef725787c28a48318540f9476173ea13807c4fcea2a5d6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and embedded URLs are indicative of a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://sbnjl.com/userfiles/files/26723253944.pdf In PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c1e24100f---diburufewerakow.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/24735222599.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160864685f0770---13731591289.pdfIn PDF document text
    • https://locoffice.ru/userfiles/file/97108819908.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/c92c9b2edd5c511d3c93baeaf1dc16d5/90649589995.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/6d05ed722682e1e973dfc4a01277ebc3/23974806357.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/2cd7f2062650d5fc92a59ffcb4a3c55a/32944899484.pdfIn PDF document text
    • http://trungtinjsc.vn/upload/FCK/file/42001642586.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a4ad0406a---puraziwepotazud.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/1664f30ff0b265576e99974cdeed9fac/24167612616.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/i188cqhubn9nc8gqcgd1q4dfg1/sanaxutogagolagapejapoxe.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/89lt9efp8qlaecbdru4ocg4b23/3057099855.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/supokukidibeno.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/02f6a0266bf5f50d24b14d95cc443e4d/69556852226.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bcd29ee6a---14840068571.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079cec228a93---79965668311.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/23456946397.pdfIn PDF document text
    • http://co-wemart.com/careeruserfiles/file/tebovizekorevuxifi.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/36578207177.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608087db5e4ac---44732103039.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/7223494150.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/71841620722.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=9+from+the+nine+worlds+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD12 16468 bytes
SHA-256: 6c2bc71458eaf0769a47834097c46e6bddae7066c4597403eecaca702840011c
font_01_sfnt_off0000e7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ffca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCA 10756 bytes
SHA-256: f2a9e46eb62b9cd7c3bda7c9e101a8204cef1a2937c08ef0db35336d64fc90d0

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