PDF malware analysis — malicious · 0f4873ed3032d9b5

MALICIOUS

PDF

82.1 KB Created: 2021-09-04 16:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: c01786c8cd8551bf6d6595ea69244277 SHA-1: 96afab18b9bf50eec57135ecd4b252f6cf1cde91 SHA-256: 0f4873ed3032d9b52c6b485c47c99bae3b12f2a263212bae1feb4b26c2324eba

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external URIs and link farms pointing to potentially compromised or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the structure and URLs are indicative of a lure to external malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://drafthe.ru/uplcv?utm_term=recondition+old+batteries+pdf PDF link annotation
- http://barudan.hk/UploadFile/file/20210611095711010.pdfIn PDF document text
- http://bc-arman.kz/ckfinder/userfiles/files/60062789934.pdfIn PDF document text
- https://aashianarealty.com/file/76238792575.pdfIn PDF document text
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16124d2d0e6367---41763210845.pdfIn PDF document text
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5f09b3cf3---ximisasudusi.pdfIn PDF document text
- http://jrpst.pl/userfiles/file/95963876227.pdfIn PDF document text
- https://icbacademy.com/upload/files/netezovefasipo.pdfIn PDF document text
- http://classicalgardenfountains.com/uplds/file/6904102703.pdfIn PDF document text
- https://aljazeerahpetroleum.ae/userfiles/files/jijegu.pdfIn PDF document text
- https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/9bfr34bm5v14nm4pqcjh4q8jd2/pomigedenapudewekut.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0dded989b---nonumafiperonomejuwete.pdfIn PDF document text
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/gm2m6fmlbvlm4la6jlcv12cjba/54186392881.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/8b116c985bcf8e5584720afb4a5ba34e/kaziraxipubaxapemijugirig.pdfIn PDF document text
- http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/0b63502c5d0642a5c7d9672312439a3e/govomekivabom.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/rnvvkqslg5up0oulad1jvjbuj3/jaxopunibaverajevewu.pdfIn PDF document text
- http://belean.pl/userfiles/file/vizumigakatazorava.pdfIn PDF document text
- http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/dekewexopagave.pdfIn PDF document text
- http://www.mab-solutions.fr/upload/file/wugorotuba.pdfIn PDF document text
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a0c7469aa---19924089913.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b0376f35b63---boruxajukoki.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e6b4c37a3---21808440651.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/63d0e3676dcd9101787c15b0121ec9f3/sazagabobulabipexi.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbca5a87e7---5207609838.pdfIn PDF document text
- http://kimwendelldesign.com/ckfinder/userfiles/files/41804397813.pdfIn PDF document text
- https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/ab46hbdeqaralq3niqhiciqpj9/77316935028.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d9c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9C7	18288 bytes
SHA-256: `a17d961e0c51182c2f7bcf2dd9ab90dc21fbc86a1a4987ffc3fbec378fbd1fd1`
`font_01_sfnt_off000109cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109CD	10796 bytes
SHA-256: `6fe5fef890b8f5c156946356b871e4389f21be71c93b51b79fa90bd8cbe79614`
`font_02_sfnt_off00012293.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12293	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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