PDF malware analysis — malicious · 79f68af14689c2ab

MALICIOUS

PDF

84.5 KB Created: 2021-07-05 06:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: d7cd5fc97abc7738e26ac13e30fda8a2 SHA-1: ec895e08327e7688086b2acd3dfc0a4f50018bf7 SHA-256: 79f68af14689c2abc2fd6625a0a9fff8f7e2f3334bbe12a34cc37c0bdec26043

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress uploads and disposable hosting, indicating a link farm designed to obscure the ultimate destination. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. The presence of embedded URLs and the heuristic firings suggest this PDF is intended to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

Nyx PDF Classifier suspicious score 0.4749

Heuristics 6

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK

PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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://laborke.ru/uplcv?utm_term=tamil+animation+movie+download+in+isaimini PDF link annotation
- http://rc-modeller.se/images/file///57900534514.pdfIn PDF document text
- http://mazdooradda.com/userfiles/file/pabezubupiwunafe.pdfIn PDF document text
- http://canphantich.net/Images_upload/files/62908987438.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160b7333cedf7d---92398928253.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/vbp7754ff6omab4moudcetf89c/61822933385.pdfIn PDF document text
- http://bpsstudio.hu/uploads/kuwunepinaremisolewavaga.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/8ih2vkl9v2f2neavbd0dj4v6r4/7418863721.pdfIn PDF document text
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/5c3a769ea12a4bc043c4e05fbd33b647/vusedulevamuke.pdfIn PDF document text
- http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/papowodogokebupuxitano.pdfIn PDF document text
- http://bwc.lt/i/pusevibukujewijosofe.pdfIn PDF document text
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8dd7837f9d---vewagomigixutuninejerar.pdfIn PDF document text
- http://aisef.org/uploads/userfiles/file/file/67081280174.pdfIn PDF document text
- https://bandai-k.com/userfiles/file/82611489728.pdfIn PDF document text
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/c88fc0c9236cc596937b3aee0bb9b654/zezikedenuvobolufejobi.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/63dcbde363ace5c35d9765014f310918/vuxin.pdfIn PDF document text
- https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/9db6719da74c5f230f38b873198e5452/18392295313.pdfIn PDF document text
- https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/tnde2vbevvb1n12j2988aeikn5/ravupuvaniju.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/nokpc384olnsor7qfmp4vu86mv/66086949744.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/76e1tmr1s21j305fu9r7qjifud/ribikakuvafodilijeki.pdfIn PDF document text
- http://faw-asia.com/image/upload/files/49113429364.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ddd1c9c8121---xawiz.pdfIn PDF document text
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffc39de14b---82308589367.pdfIn PDF document text
- http://geniuschulatutor.com/userfiles/files/pizexisorelezazoka.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/nc788bb1q65tfj1v6md5i4n8r3/binajibur.pdfIn PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6823350197---39208558326.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_off0000f9e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9E1	10424 bytes
SHA-256: `02c9bffbcc2225cff6c804d9e5069d15429e96ba8e52f23b26f56e21451bc5fa`
`font_01_sfnt_off00011190.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11190	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000129a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129A2	17856 bytes
SHA-256: `59f32aeac883a625fb1e27d98b5eb7b4694ce9c40804fa37ba2ed616012748cb`

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