PDF malware analysis — malicious · 0dae801d9f66c735

MALICIOUS

PDF

85.8 KB Created: 2021-07-13 19:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23

MD5: b5cac48d1d4ad713e284ac88fd04c9da SHA-1: 0715716f35fa4159f57214e683977803d85252b7 SHA-256: 0dae801d9f66c735faae3dae43b8ce580e8a6c23ea1e22b7f9978aa581363132

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is detected as malicious by ClamAV and exhibits characteristics of a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting. The PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which could be used to facilitate these redirects.

Machine Learning

Nyx PDF Classifier clean score 0.2214

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://huntic.ru/uplcv?utm_term=two+wheeler+sale+agreement+format PDF link annotation
- http://curry-box-deluxe.de/userfiles/file/funub.pdfIn PDF document text
- http://dochoiotovn.com/uploads/userfiles/file/gozagelomuxet.pdfIn PDF document text
- https://mfdesign.hu/files/file/99602873082.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/pk9dd8visk95joosoaofdlg676/22634534556.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8rg5hqamn1dvk3vgn031522l63/4821026724.pdfIn PDF document text
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c05faae8568---74966943283.pdfIn PDF document text
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/e7049d1ebeadfd8fb3903582dd3f6e8a/momaborirekosugov.pdfIn PDF document text
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8b538b7a---dasajeterow.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/2ab5f6c4390567660f0eddb108d41f60/52096427035.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/j9bavhja3hl9pnr3bdm5dl6n70/83955758119.pdfIn PDF document text
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/b0c63cdca2f926c954904ba1e1071876/34918170911.pdfIn PDF document text
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6e4e63ec75aa778e4f08c550c9aefc1f/ratuwukilivif.pdfIn PDF document text
- https://weddingitaly.jp/images/file/nikinusatoki.pdfIn PDF document text
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/ireu1cin967lkvfvbhovcbf810/3987837229.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c1531296393---vekijavopitidu.pdfIn PDF document text
- http://rymwid-training.com/userfiles/file/75876476617.pdfIn PDF document text
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/ftf5f0tm54mdldmg85lqtahpo7/tujavuledekuk.pdfIn PDF document text
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ccbed4960---keputupapused.pdfIn PDF document text
- http://ascensionchina.com/userfiles/file/rapetoravilojukob.pdfIn PDF document text
- http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/32385924025.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160afdccc7f9bc---gusatu.pdfIn PDF document text
- https://emauto.lv/index/images/up/file/88263821690.pdfIn PDF document text
- http://ekonopuntos.com/campannas/file/minijezimegibo.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/6010afaa45fc606e195854d4d3c2ce18/15611480424.pdfIn PDF document text
- http://www.zywawiara.pl/pliki/sarejugawejoge.pdfIn 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fb75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB75	10620 bytes
SHA-256: `025d93ef2eda395d5d0652e25e60e32a5dcc68a34aa23273cde61c254d227540`
`font_01_sfnt_off000113b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113B8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012bca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BCA	16624 bytes
SHA-256: `82aadfd4352465ae1ce64e2c4adc41322b0ecf321d807c4b3d7748e309dc3020`

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