PDF malware analysis — malicious · fcc3e07dd3c1e261

MALICIOUS

PDF

80.4 KB Created: 2021-06-30 23:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: e62a16e62e728beacbdce6b25e1de258 SHA-1: 52de5e110026fb493a87c4b700f4892f404996ff SHA-256: fcc3e07dd3c1e2616e4fd5b245cd2f2caea13d845207bd153f7a6894f2f3eb35

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as a phishing trojan by ClamAV, indicating malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

Nyx PDF Classifier suspicious score 0.4208

Heuristics 5

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 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
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://btcauction.vn/hinhanh/file/31590349035.pdf In PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd01571a1b---pulosetibusubogavosoxex.pdfIn PDF document text
- http://qzgj.cn/upload/file/povakugixatadexuzutigitus.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bcfc179fd---10507260567.pdfIn PDF document text
- http://andlupa.com/userfiles/file/80976472044.pdfIn PDF document text
- https://kabelkyaobuv.sk/editor_uploads/files/rosawanononotiwuzeva.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/4541ec3195580a80f093aae080b60e93/tezatu.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609840a43c594---bifodisavavuvukifotovijar.pdfIn PDF document text
- http://minerva-collection.net/files/files/xetef.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e191020b3---ponexiwifixami.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da6943b04d---11430139761.pdfIn PDF document text
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/2c386c27b2a605827f506f6e67cec303/22312397712.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160809efbe189b---12150336168.pdfIn PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c947233b8---98422860674.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d45fb2a8d1---xasiwofuviguxarobogub.pdfIn PDF document text
- http://broadviewlibrary.org/uploaded_bvlib/file/37024804394.pdfIn PDF document text
- http://bethelhanberryaaa.com/clients/2/24/2465ef4bb9bb1b7382310ae17d7cafeb/File/pifutemujanikuxumivuxe.pdfIn PDF document text
- https://efnnma.org/files/file/29321196835.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3ea00661c---muxojebokobuji.pdfIn PDF document text
- http://eros-arena-reutlingen.de/eros/userfiles/file/ruwabifav.pdfIn PDF document text
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/28u1orkt7r6q86frkceg09i1r6/11064460808.pdfIn PDF document text
- https://ppuhperspektywa.pl/files/edytor/file/zamazuvirux.pdfIn PDF document text
- http://www.aqsclimited.com/EditorImages/file/nuzuluwonujewiregosevaka.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=wisayah+global+investment+companyPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f30c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF30C	16528 bytes
SHA-256: `29c42687ca19d8e56fd47424ae163e30a6522089e218796af96f6b9871cdb4e5`
`font_01_sfnt_off00011dab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DAB	11032 bytes
SHA-256: `465d772c836865b38c9fac8ff09d182864f32b8f514d2ee680cdc3f8d0dfd868`

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