Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9338576c05f65cd…

MALICIOUS

PDF

81.8 KB Created: 2021-07-02 07:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3f0f00902a4eeacd3909f92a4107fd49 SHA-1: 00ae8287488b57bc28551a5ea950cbfe1f34ea80 SHA-256: c9338576c05f65cd7d378ea3bd6355d5f61baebf12fb1a4a6e90119fab97a771
196 Risk Score

Malware Insights

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

The PDF contains a link farm hosted on compromised WordPress sites, likely intended to trick users into downloading a password-protected archive. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document provides instructions for accessing such an archive, a common tactic to bypass gateway scanning. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce11d714db---71998180329.pdf In PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wotosew.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f07d24b51---rakaziguwo.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/31615706942.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/ocoeu7g2onor0g5nmcs6bhm410/rorojamobiv.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jobakigevavex.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/a729160baca2665c3fb1f3e7fc5d5a51/wagojaludekemumelafadoba.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/e624a56d7079417fe7e3b4bac728f526/wekagelilal.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609022eb346ac---jiwujinizi.pdfIn PDF document text
    • https://olivier-daulte.com/ckfinder/userfiles/files/95955231543.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085bebdde530---wuvorobidepudolamogud.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/8pajr995m9tk6qe0bf5s025u1s/50028622296.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/pogonezi.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e2f6d7ccbebb25619576e7f509139ef7/vejojugiposamerufop.pdfIn PDF document text
    • http://dothi.info/images/files/jasuragep.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e09190ad3b---4802138531.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/24335b2ae500b23daa8d575e945c5e42/xinowemepovutumed.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/41820314000.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/nk34noral2eiep342861spvpk8/77055127785.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11aca039a6---4241232514.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/eada64ed5517bf59bfe8206fc2cc5d0a/zuzafarujoxivizixurulu.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/10586208010.pdfIn PDF document text
    • http://cuatudongsaigon.vn/uploads/files/37531986977.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a816a77e385---8039658612.pdfIn PDF document text
    • http://berbun.com/user_img/file/rasumegojexuxanajivexom.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ef62e38a0---2522149183.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=philips+190s+service+manualPDF 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_off0000d92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92A 10928 bytes
SHA-256: 60466e177067fae31c02332bb5d06d02a8c80c1d27fb55d4e82f29d01585bd5b
font_01_sfnt_off0000f258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF258 18080 bytes
SHA-256: e4d6e1eed85f0d2ca1acb545f995d0a454624d3029c693639f3a56fa0c3778c7
font_02_sfnt_off000121c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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