Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e95f8bf415970b7…

MALICIOUS

PDF

88.0 KB Created: 2021-06-27 02:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ba5340d30bf44830446b4cabdf660845 SHA-1: 9e7cbebfc926b292c3c421309afaa99bda12da11 SHA-256: 2e95f8bf415970b7514255b4fe6a30cf8343005aa5b08f552918519712979cfe
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms strongly supports the classification as a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://catamma.ru/uplcv?utm_term=too+much+acth PDF link annotation
    • http://canadapremiumlubes.com/survey/userfiles/files/jivopatipaxuziragaxos.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/30059718750.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/8b263bbfe90044b972aa6b3fd94e4703/75758906085.pdfIn PDF document text
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/bikozisewewusimosala.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/62lft2ba8t3cf7m68sodrrdjhh/88441777145.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4aeb32ffc---weluguduvobuvito.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/dufewazadoguvowo.pdfIn PDF document text
    • http://lucann.com/Upload/file/gamuwederifaxifo.pdfIn PDF document text
    • http://charontrade.hu/data/file/62920765936.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/xidizuxaripimuruwalem.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/946627f1d3c9ba490cfc1039417d1e50/nubegupileriwiridareku.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2054d1255---lukalirinefaxabezened.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/c3acba4055ba4c7ee6ff10822676af3c/34256866999.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7959041c04---97568353846.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/43711069004.pdfIn PDF document text
    • http://nakajima-ya.com/upload/save_image/files/gazuzepupaxerolilidedak.pdfIn PDF document text
    • https://hsse.cl/files/zabusagunesola.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/3749b540c7f8c2ecbacaa21eb4334085/nagixonuvirelu.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/f0edad4f04ea680e115074b933128af7/burigodewosan.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073690f7da81---13669716953.pdfIn PDF document text
    • http://csc010.com/userfiles/file/20210614175334_ughgpi.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/31903860914.pdfIn PDF document text
    • http://digifast.cz/userfiles/xegarabomorumepotusofepul.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_off0000f8af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000110c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C1 16600 bytes
SHA-256: 2656a97bd1ecd7349efa70c691df515a8a15350497e16675807b521b38327135
font_02_sfnt_off00013bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BF8 9916 bytes
SHA-256: 0db94a9e06c32c7c1055465c79330cffc7703402cbe497fc6bb6344bc5922a4e

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