Malicious PDF — malware analysis report

Static analysis result for SHA-256 940296b87a72357f…

MALICIOUS

PDF

84.1 KB Created: 2021-07-05 00:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eea5aa78384e77c26cc85f8659a3e8d9 SHA-1: 9b6666ae6b69424b64b50e97df35f17900116e9a SHA-256: 940296b87a72357f705a2a30fbc4e6a8789852465ce1743c145ba70346cad08a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external URIs and links to compromised WordPress uploads, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the extensive use of external links points to a watering hole or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://pistant.ru/uplcv?utm_term=pink+marble+acrylic+nails PDF link annotation
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/0340c6a4ab1b119ec2555dfcf076a386/tabez.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/33372ab24c2949b281e2d2697126743c/45475676576.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/602c6ee6ce3a086cda22c05cf99b6b33/xomuju.pdfIn PDF document text
    • http://buydecor.ru/uploads/files/modigiwolisog.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/motagi.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/mmnkqkti05pvo64a4spp0svrgj/17486299024.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/merinewi.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/6766103960.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/69f0nhkpo848262hklhqakqdhi/67706016803.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/58634545517.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6142099c5---60760951829.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/88830514817.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/51jr3q10tb8qu5fbfvs4t2tn8j/66454854307.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/94435187850.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/goxilarepegapuvan.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/89630757374.pdfIn PDF document text
    • http://togetherwewalkny.org/clients/2/24/2411cc079aa0f0d7fd57f81c6163ecfd/File/32279323975.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210522044133858.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca3dedb0af---70649543939.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd514ec04c4---76249579249.pdfIn PDF document text
    • https://tiklatakip.com/calisma2/files/uploads/81027019702.pdfIn PDF document text
    • https://drsubhashawale.com/ckfinder/userfiles/files/lunuvosewomexeg.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/moralidatina.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/8b74d5ef33f31c23f94f8279ec1ae680/28402935.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/oa8pjgs0jftbseiorcgg8midq0/98951076276.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/42786825780.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_off0000e477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE477 17720 bytes
SHA-256: 352d2f685f2acbed2d1595d5ed1eeedc43d661c5621b1e0b83a6980595f7ce36
font_01_sfnt_off00011311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11311 10520 bytes
SHA-256: 5b48da7ad3c626f567b3e6e8f04f07c245417d6cf67579428b27c78c1713ebb4
font_02_sfnt_off00012aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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