Malicious PDF — malware analysis report

Static analysis result for SHA-256 530ff8de2f74294c…

MALICIOUS

PDF

96.5 KB Created: 2021-09-03 10:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: afeaf5a6a544f9bc3a7a6bc1389b6990 SHA-1: 8321c5690becc5ff26f46fbf30c1f220621db058 SHA-256: 530ff8de2f74294c3438556a976a4fb89018c10ef72b0bccd3045fd962d31efb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. It contains numerous links to external websites, some of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL patterns point to a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://poolpoint.be/uploads/file/76007613582.pdf In PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/32931510128.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/7eapfqj82s27sl8fsm0fsv0l3f/pixixaderif.pdfIn PDF document text
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/vozaguviwufuwegu.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/2bcaf4e9a67895388709081fd8da39e6/24427126015.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/xaponofujidajerusolisi.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/p62s2bs0v4dd3kj29t712dq7fd/64255020250.pdfIn PDF document text
    • https://renewone.de/files/14873053770.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/lidavemobanutof.pdfIn PDF document text
    • https://igruppe.no/ckfinder/userfiles//files/zabexamabiledegat.pdfIn PDF document text
    • http://thelifelesson.net/home/tappingchanges/public_html/dowalumniusa/ckfinder/userfiles/files/jepulamutupimuxun.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/zorodidoxapoxef.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607774a6b5ec6---wofoderu.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/gavotunisuzetumutizewi.pdfIn PDF document text
    • https://nationalshield-uae.com/userfiles/files/44920070999.pdfIn PDF document text
    • https://aokman-drive.com/d/files/824615559.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/lurogamerewovafufalede.pdfIn PDF document text
    • http://anapro.com/ckfinder/userfiles/files/968214155.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a2e43928287b287f5c6bc56650869dd1/6439106478.pdfIn PDF document text
    • http://giovanninociti.com/userfiles/files/mekojupenaxozexumigarige.pdfIn PDF document text
    • http://csc021.com/userfiles/file/20210625053607_ggt7yz.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/ced6a3bed4812faf315b4fd08f5bf0ff/59977477354.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/rigodusagasi.pdfIn PDF document text
    • https://people11people.com/uploads/File/76156244172.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=customers+needs+and+wants+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_off00011256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11256 18780 bytes
SHA-256: bf7a8813626279fdd2441887d379b3968de62c48b85b0f4ef1d04068a3a4774c
font_01_sfnt_off00014396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14396 10740 bytes
SHA-256: aa668b197a20181ed5deb1d083dbf8864261b4c0818418808cf61117612c21b0
font_02_sfnt_off00015c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C65 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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