PDF malware analysis — malicious · 94c9a44417420bdf

MALICIOUS

PDF

83.2 KB Created: 2021-09-02 12:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: cd47d626ab9f18e44366f35919715056 SHA-1: e93eae73ed0265fc113bbeb184ffbc8f5b5cdcc3 SHA-256: 94c9a44417420bdf8e4ee695e1d7e48978d5be68d4b3afb2ab4ea02cf80503f6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9911

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://huntic.ru/uplcv?utm_term=who+global+atlas+of+traditional+complementary+and+alternative+medicine+pdf PDF link annotation
- http://antonioruizabogados.es/userfiles/file/3675796299.pdfIn PDF document text
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d7ec34d4f0---tojolumopobatelozaninew.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fcd0c11bf50---wezaxezutozudinikakuvador.pdfIn PDF document text
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607934792a781---62891518252.pdfIn PDF document text
- https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/frst1ai2iaobim06te9iai54b0/15475552100.pdfIn PDF document text
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4ce74722d---lebiluzinevopami.pdfIn PDF document text
- http://educationexplosion.com/clients/a/aa/aae59ec6301d25964842a0067e0ae100/File/72058878620.pdfIn PDF document text
- http://flygarfield.net/userfiles/file/difevofor.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b84b1f791d8---mimegawizaxovaz.pdfIn PDF document text
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/2f21a2eb1e82641bc80ea9a8aa253e16/4025063839.pdfIn PDF document text
- http://tvtamminhphat.com/uploads/userfiles/file/getazisevudem.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b0f38a3ee---lawaf.pdfIn PDF document text
- https://lengthening-sldf.com/userfiles/file/87297664122.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16088d03ed2c35---13995514275.pdfIn PDF document text
- http://matstravel.ru/userfiles/file/94415539295.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/227e2f024b95af07e2e704c2e56ca163/34781595986.pdfIn PDF document text
- https://erdemlerkoleji.com/resimler/files/49616215656.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a6aed2a08e0---sijafaridaxemizit.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/26f0c1bf55f51001cc664187a8f80501/96531628502.pdfIn PDF document text
- http://workcoop.org/fckeditor/userimages/file/20210818030037.pdfIn PDF document text
- https://tselectromechanical.com/uploads/CKfiles/files/73494242347.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607862d94e427---51531248027.pdfIn PDF document text
- http://gcsiva.com/files/userfiles/file/sulazalupogeniwe.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b853dfdec66---1570593115.pdfIn PDF document text
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/49275115328.pdfIn PDF document text
- http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/1v1ni4enq0k1b2u3a4glc6jkc2/82482679504.pdfIn PDF document text
- https://akproauto.com/nbloom/fckuploads/file/zolow.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_off0000da98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA98	18092 bytes
SHA-256: `0be513f71c1e58f72d5c323a9357dac5355259a6b54e688e66e897d18dee71ee`
`font_01_sfnt_off0001097e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1097E	11380 bytes
SHA-256: `244413d1ed044f076e2dd28ab82d764c476c362d42e6582446c9771cc3c7fef6`
`font_02_sfnt_off000123d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123D0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.