Malicious PDF — malware analysis report

Static analysis result for SHA-256 038b8d99136a537e…

MALICIOUS

PDF

72.7 KB Created: 2021-09-13 17:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7f1317c63debe07845a6ae63258fde23 SHA-1: 85ed7c4914dffa3c4de7c49ab16f8927b3c906c3 SHA-256: 038b8d99136a537e5109c430fb0af58665fb6e0c3b2fbd83daeb5ab875905357
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many pointing to compromised WordPress sites and disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious link farm designed to lure users to potentially harmful content.

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 https://ketchas.ru/uplcv?utm_term=camara+vision+nocturna+apk PDF link annotation
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f0a7eb01fb---venedagisin.pdfIn PDF document text
    • http://mintaialuminum.com/d/files/sixorida.pdfIn PDF document text
    • http://ipllaser.in/uploads/54756300710.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16137e0eeb0c48---disodafakukibumidupuzus.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/18039804012.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/medidixoroj.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161377ca80c0e1---fijitodemazuwitolemamude.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16131ca94d21d4---57030388688.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f99b400615---81826368264.pdfIn PDF document text
    • http://architettoannalisatinelli.it/userfiles/files/rarozib.pdfIn PDF document text
    • http://dj-venci.com/uploads/pages/files/tafuwojixalebuzagakos.pdfIn PDF document text
    • http://xn----7sbndn5at.xn--p1ai/uploads/files/48682036161.pdfIn PDF document text
    • http://krallarintavugu.com/upload/file/gupawezajoturudajesazirum.pdfIn PDF document text
    • http://festacreativita.org/userfiles/file/vawobuludekiverem.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/xevazefil.pdfIn PDF document text
    • http://abbeloosschinkels.be/userfiles/file/67249436800.pdfIn PDF document text
    • http://glassick.com/userfiles/file/59863102829.pdfIn PDF document text
    • http://ph-easycome.com/userfiles/file/58320136506.pdfIn PDF document text
    • https://northwestconvention.cz/data/files/34890701743.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/161340bd9a26bd---binulalanikaziro.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/8f57efe9ef8d2d9e6d62e7343f1cf2cd/paniwowejoxegisuzudokeve.pdfIn PDF document text
    • http://websteravelandscaping.com/editorData/file/28192384019.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/suwukapiratetijatur.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD1 16588 bytes
SHA-256: c8e90704c16c75291706c854158ce2902ee1c1733e2c94fcfba31558f443d596
font_01_sfnt_off0000e53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD55 10648 bytes
SHA-256: bdfd333bbe4c31a69f8bbd5feb7c3b55b2178cce65f5a2dc168a97982129e8dc

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