PDF malware analysis — malicious · a275d591cc0623ab

MALICIOUS

PDF

273.6 KB Created: 2021-07-13 21:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 119a0c2912c52e89c2289be867aa3d54 SHA-1: efd24807e9128e725851c1ed03453089db1fb159 SHA-256: a275d591cc0623ab6068fa4b5bdd8a3ef69eca2188c282410807c3df0d87fb85

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with one heuristic specifically flagging a link farm pointing to compromised WordPress upload storage. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate the document is designed to redirect users to potentially malicious content.

Machine Learning

Nyx PDF Classifier suspicious score 0.3476

Heuristics 4

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.
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://myphi.biz/nbloom/fckuploads/file/49621918595.pdf In PDF document text
- http://china-zub.ru/userfiles/file/wuvurojepamelapusegatade.pdfIn PDF document text
- http://chronicles.ae/userfiles/files/jedomerezale.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfa4d553dac---jonele.pdfIn PDF document text
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/1bf911b0c57c4e45e00ddee365ebfe8a/7170077428.pdfIn PDF document text
- https://www.apollopowersystems.com/wp-content/plugins/super-forms/uploads/php/files/750dce1eb55b06440be2509f1ad86ad1/parez.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6080de673---46863955734.pdfIn PDF document text
- http://atreve.eu/ubezpiecz/obrazy/file/wajojugadogulur.pdfIn PDF document text
- http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/sazijogulopalajarinan.pdfIn PDF document text
- https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/f5ba377fef6c6807401892631bb3d727/47616813384.pdfIn PDF document text
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/6fd5166a0e470ff56050ccc774e110a9/xemoro.pdfIn PDF document text
- https://bojovicsirogojno.com//files/1961356015.pdfIn PDF document text
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818a5c932e8---50588674079.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16093e34f1c60b---gamam.pdfIn PDF document text
- https://bd-sokolovska.eu/userfiles/file/53805606000.pdfIn PDF document text
- http://cathyknightwaite.com/ckfinder/userfiles/files/nalodorejuxinoxirapomu.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/ad88017c5b409f20da02afb84fd0b1d9/73194206893.pdfIn PDF document text
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a89a663f3cf6dc04b7071883fe44560/4214322775.pdfIn PDF document text
- http://seigyobannkaigaikikaku.com/ckfinder/userfiles/files/sumetanemajokunexaj.pdfIn PDF document text
- http://yomamasushitogo.com/uploads/files/ketivavosesidinajata.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cda334a028---65026272501.pdfIn PDF document text
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/51ad6241c2b98b8f71990d38dd73709a/xezojokalabukivozi.pdfIn PDF document text
- http://aaykpn.com/uploads/editor/files/34938836852.pdfIn PDF document text
- http://quadocdao.vn/uploads/files/radewajejugesofatiri.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=when+did+japan+leave+the+league+of+nationsPDF link annotation
- 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_off0001ad78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1AD78	10964 bytes
SHA-256: `46750ffcd97b3e45feb397ab14a08f58bf4f58b37f33f2bc1c4fd707625be132`
`font_01_sfnt_off0001c6a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C6A0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001deb2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1DEB2	16904 bytes
SHA-256: `bc212d4662ec8e2021be3f9d3c7252061b95fd3a761ae8eac5041700cf43b9dc`
`font_03_sfnt_off00020b22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x20B22	238996 bytes
SHA-256: `0437809702d123b09bc3ce3bb240c46d55436c1d34e1ae904bec85afdce95eab`

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