Malicious PDF — malware analysis report

Static analysis result for SHA-256 158ce2cc55129227…

MALICIOUS

PDF

73.6 KB Created: 2021-09-07 00:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 19195a2a81ce7e7dc4a8d91d59c86fd5 SHA-1: da83dad4ff726ed7599c6898ccc1f7a2e68fab13 SHA-256: 158ce2cc55129227b0afd64f1bb8492f4f40c385541d108ee880691408435596
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with a phishing lure or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 https://33mobility.net/uploads/files/jozopasibowilofol.pdf In PDF document text
    • http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/40745066862.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d9597cd62---66430516891.pdfIn PDF document text
    • http://kindergartenhelden.at/upload/file/60769083192.pdfIn PDF document text
    • http://nagymester.com/userfiles/file/4797809310.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c0662030ff5---muzaweliw.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/45291668706.pdfIn PDF document text
    • https://antae.be/app/webroot/uploads/file/31579776075.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/36983782680.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-9/file/25874222820.pdfIn PDF document text
    • https://jetaime-shop.com/files/lowejawojatipiratinebug.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a54e39c0bf---10692478521.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/81450555481.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/es4ibng28p2rp46ma7scb677j4/21477283255.pdfIn PDF document text
    • http://voxel-avocats.fr/uploads/file/48948895981.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613681f276217---vurepewopibivasafo.pdfIn PDF document text
    • https://maisonforville.be/documents/file/6632730246.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16086f8bb61340---tewiwakikefideziguwigiru.pdfIn PDF document text
    • http://primaneighbors.com/userimages/76216513467.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16087574f8f44d---jarusabedewuguviza.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607948765be0d---maginejasutodilopedokage.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/kvho7jfvpph11a46gi57lq8oc3/20944157990.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/sobirefukuvesuzuvodiwego.pdfIn PDF document text
    • http://climtech.com/files/files/94313000074.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16082c2a89c98a---117340924.pdfIn PDF document text
    • https://jackinthegymtpe.com/uploads//files/202108090552198882.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=intellectual+property+law+philippines+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_off0000c00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC00E 10968 bytes
SHA-256: 67dea9ef97c6f19cc98c8ff11b79b45c375d6a891053fa0902159d2d9811f0b2
font_01_sfnt_off0000d983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD983 15476 bytes
SHA-256: bd27e1e3a49c0e24b427b55f088ba5623d4e1e60f6b314cf219d6ac014f540fb
font_02_sfnt_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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