Malicious PDF — malware analysis report

Static analysis result for SHA-256 025ed31627d2a8a2…

MALICIOUS

PDF

86.6 KB Created: 2021-07-18 11:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 00073f626407d39662c24469956ba6a9 SHA-1: c3bdb78026c261104ae62394803a76063c771e7e SHA-256: 025ed31627d2a8a2206617784bbc235862c0550c285bccb29d0a090e0356a9ab
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on multiple domains, some of which appear to be compromised or disposable, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://rurisnet.org/images/file/21367921486.pdf In PDF document text
    • https://hoakhanh.vn/uploads/image/files/33403345817.pdfIn PDF document text
    • https://clubelsendero.com/img_pag/file/51524995900.pdfIn PDF document text
    • http://gilendor.cz/userfiles/file/85911323398.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a1192ac47---zudifowogefo.pdfIn PDF document text
    • https://rmp-familienanzeigen.de/cms/files/mapegoxerujuxuto.pdfIn PDF document text
    • http://redhillplantation.com/clients/1/1a/1a02e1fabf1298af97853074613e4b20/File/6522823579.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/26f9958903419fe1133a7744712efcb7/6841482297.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/59045481051.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160702eb5e8acd---45076519714.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b62c5877cc3---55884411726.pdfIn PDF document text
    • http://thebranchoflife.org/clients/3/37/37a84c4c47f147f839b5d5a44bb1b86c/File/62417722780.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a2eaeb0b4---81639946688.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/xazesavuvogigegikesodega.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16076bce441a42---sesizewaxidat.pdfIn PDF document text
    • http://cropscipublisher.com/files/upfiles/file/widalamigodawujebofemezup.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/19764690972.pdfIn PDF document text
    • http://etcad.net/np/upfile/file/mumepet.pdfIn PDF document text
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/k55gakk50bidtsd609mcs026d4/29115006256.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/e9fc8ca775df32d62aaa086aaa565b5c/84634265600.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/pc5bbrbn7if3s8f345944mlbo9/vifew.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/c783a508ff39f92d39d7c66d41ef35f7/rojijatesefen.pdfIn PDF document text
    • http://sukhabalka.com/files/file/rogewajevuzafunazifezaza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=isaimini+frozen+movie+downloadPDF 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_off0000f0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FA 16912 bytes
SHA-256: 58f0d77b4ec8c0242787c67c405e70899d4baee37cdce1b289935d2eea0b94a2
font_01_sfnt_off00011cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001350f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1350F 10580 bytes
SHA-256: a76acb705d8604c26f6b153f89d424b94a338847557903e214ecb15e4bc18cbf

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