Malicious PDF — malware analysis report

Static analysis result for SHA-256 94439c517422eceb…

MALICIOUS

PDF

103.1 KB Created: 2021-07-12 17:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ad5e45c7e3cd9679b19803c28be87749 SHA-1: c213ec08296722b3899fafedf695283425349b95 SHA-256: 94439c517422eceb780d9667a2d24fd836db04c4793c4681309fdca5006374cf
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the embedded links are the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://sheeld.org/clients/d/d0/d021426cee8527c21a172be12ef3d645/File/4172740815.pdf In PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/17fc6aaabb19e7323b14fe3d368fc0dd/74164627285.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/0e2b5bfce7e435d3629510e8ac5f23b4/87492126160.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4979d529c---93565582462.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/pouh6c8244ov4t4cg2ciph3r86/26360036016.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/eibksju8mla7oc1ol7gv4s73el/nejepa.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/b182a31052fbe004dfb159ca7f67b8fc/65326869408.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/moclnpne1p9gt226m69sajjjou/28907646473.pdfIn PDF document text
    • http://gaziogluenerji.com/images_upload/files/pefasumof.pdfIn PDF document text
    • http://amajyuku.com/files/files/98471002356.pdfIn PDF document text
    • http://alliusie.com/userfiles/file/67356963672.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/943d4759e73a7e0e9c6a2aeae82e4387/xiwiwozamepu.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/kljn9lu3rn9o228euv9534rljr/bapowiliwenasujokepekaf.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/2k5j53bqj8p4sq06lg3dngm3s2/tedujafosugesojimiv.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/8ff81c83ff651787e5b51d2e91857e5d/gejizanubobobaxupi.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/105d7cdd924ec5bf987f27d763ea9afb/71993995865.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/bikamiwuzaganuzozegu.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b539b456a3---87447928298.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/2675368310.pdfIn PDF document text
    • https://grandplaza.bg/uploads/assets/file/vevazalotixegiref.pdfIn PDF document text
    • http://donelreunion.com/clients/5/59/59051ae02fa593b10ab13f41bf6316a1/File/14688116583.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/3598345983.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/1270dcb6a91070c030883fa6d5e40b5b/sokaxofawonasosexuvulome.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/96285887008.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/6c3423c1afc126c9f85a3678b39521e8/zitebidefexamagokimijezej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=space+time+architecture+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_off00012f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F84 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001479b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1479B 10620 bytes
SHA-256: 353ba9f2164db5079e8879a30f8f7541bc0cba5726531583add8c04ae8fd0cb3
font_02_sfnt_off00015fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FE2 18392 bytes
SHA-256: fba2d1b0c96b617249f5e2a56aeea9861513a04ab26b6d1fdcf537c98bc6dba1

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