PDF malware analysis — malicious · de0e4b09bcbdcb5a

MALICIOUS

PDF

74.8 KB Created: 2021-09-02 13:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: c8e807655eba6b1ea05e3fd26ffdd75d SHA-1: f41c4deec0038082a5c8c8a2801887bf7894d6a7 SHA-256: de0e4b09bcbdcb5a6e3260b41ac37117be06fe17e04fa5d43258c3ee82d75caf

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. It contains numerous links pointing to potentially compromised websites, suggesting a link farm or redirection mechanism to malicious content. The PDF structure and embedded links indicate an attempt to direct users to external, untrusted resources, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier clean score 0.2303

Heuristics 5

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
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://studioguidobarbieri.it/userfiles/files/novetowibitufabido.pdf In PDF document text
- https://aihr-iadh.org/uploads/FCK_files/file/kutawuleg.pdfIn PDF document text
- http://ttmm.co.jp/ckfinder/userfiles/files/54640088462.pdfIn PDF document text
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/5fa67e2e5726562ff307a497115bf218/24440992519.pdfIn PDF document text
- https://havanic.com/cache/fck_files/file/xekotesetafo.pdfIn PDF document text
- http://designbeginnings.com/upload/file/84442314763.pdfIn PDF document text
- https://baoholaodong24.com/userfiles/file/39690818598.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/10444b4863ebe30fa4564803a9a29103/kajak.pdfIn PDF document text
- http://adabaskimerkezi.com/upload/file/49963013742.pdfIn PDF document text
- http://cestovni-postylka.eu/userfiles/file/xojirekowopa.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/38b2095fcdd91c56dbebacb89e65ec52/xivobokavete.pdfIn PDF document text
- https://pima-alarms.rs/slicice/file/77351059712.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/08348488738db29595ac548cdb7a9ae7/67956696764.pdfIn PDF document text
- http://serramentisiciliano.it/userfiles/files/tosunirizewap.pdfIn PDF document text
- http://tydafa.com/dafa/uploadfiles/20210709101540.pdfIn PDF document text
- http://www.autoservis-hubatka.cz/admin/upload/ww/file/sunusafo.pdfIn PDF document text
- https://emmaushuis.org/pages/zageretufegomuxuzez.pdfIn PDF document text
- http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074ceb906c73---sirunikukamazaserisewagi.pdfIn PDF document text
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/f7776f0ea8084b090697f02d09afad92/7767307048.pdfIn PDF document text
- http://www.kickcommerce.com/userfiles/file/zadisexeputulavojizufa.pdfIn PDF document text
- http://iphysiology.ru/upload/lapinuladovezelugujodafa.pdfIn PDF document text
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c71ff2c1639---loxifarefov.pdfIn PDF document text
- https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/a3bf3e49f9cf479422ea0825a9864d5b/5102728171.pdfIn PDF document text
- https://bishopsalamatkhokhar.org/userfiles/file/supivajifozabes.pdfIn PDF document text
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16091223c067cc---34357910146.pdfIn PDF document text
- http://movietek.vn/hinh-anh/files/sadekukalex.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=fingerstyle+ukulele+book+pdfPDF 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_off0000d762.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD762	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ef79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF79	10932 bytes
SHA-256: `3e8147953469c6d57bebb12df96a31b32b6b82ce7f818ca0807e5a5b21cf01e9`

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