PDF malware analysis — malicious · 269c9235ff88ad15

MALICIOUS

PDF

85.1 KB Created: 2021-06-28 14:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 1fffdcfa8d68e55e13cc55131a28387a SHA-1: 1126494ed8f79d48c5af4e455a93b9d0c25edb14 SHA-256: 269c9235ff88ad15494c8d1553b7f91c3dee116d29421768b1f4a934d71e08b7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories and other potentially malicious sites. The primary purpose appears to be directing users to external resources, likely for phishing or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

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://travelone.ae/userfiles/files/76803426327.pdf In PDF document text
- https://conexkarvan.com/cache/fck_files/file/44712576499.pdfIn PDF document text
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16076af45a3e47---nuvusirovexudiwasasada.pdfIn PDF document text
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b75a3b5ac5---6196440463.pdfIn PDF document text
- https://genegurumiraclehealer.comuserfiles/file/gupiviwipexodurox.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/b92b335c2975e23d8b4198b69433c80d/94601169584.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c252610d642---987089174.pdfIn PDF document text
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/3514af6a871d55f0426487260de159ae/peruwelemorufegezezawek.pdfIn PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/gns1djv890nuvb29vde3k0e1dm/bugurix.pdfIn PDF document text
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160704979a0e7d---sisoruwofigofevogeno.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c12479c78ff---96687910936.pdfIn PDF document text
- http://grawerlik.pl/userfiles/file/34749072323.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/5416757022.pdfIn PDF document text
- http://dush-kz.ru/uploads/fck/file/ludagogotumeke.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5d542fc16---26953356494.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/par8eo1jvgah1l2sscdc7pcgo7/jomabikimawexatagexowe.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/68c6d722af3e4beccf5243f4a4a5038a/64549101716.pdfIn PDF document text
- https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/c77c504e94f760def7d1ff3582ec9224/49156142233.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/sn7svavtm21098971g7ku6l2q0/fubelifolop.pdfIn PDF document text
- http://jvcc.cn/ckfinder/userfiles/files/210608014422667663bj8lg.pdfIn PDF document text
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/38d2ede83109017d0fe5689cd98c2b68/87647843564.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609727d993cc2---40447146298.pdfIn PDF document text
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1fc2642b9---67856816266.pdfIn PDF document text
- https://soechi.net/userfiles/file/8817380757.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=snow+white+with+the+red+hair+musicPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d93c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD93C	10848 bytes
SHA-256: `e076ec127c8fd10a41f1267a8214ead562f3edab99e86175bd9698e76c48e4ba`
`font_01_sfnt_off0000f22f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF22F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010a41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A41	17964 bytes
SHA-256: `5e9c003e81860794611ec1252037c086948d4b92dbcfbaa05917ec8acbfc18ab`
`font_03_sfnt_off000139fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x139FD	3204 bytes
SHA-256: `7abb5f0f12a6ffa78b7621aaa34f4289ffa16bf2302e7c8c9cdfa7b1d18940b1`

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