PDF malware analysis — malicious · dc4a30b51a58cf45

MALICIOUS

PDF

81.5 KB Created: 2021-07-25 14:01:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 244595e476848a204bab82bcc2bf2ca4 SHA-1: 9a0278b4b657c50a34886ae13ea9258fe7f8a178 SHA-256: dc4a30b51a58cf4585ac87bd82b0bef1083c7add3ff3b1a1b86e47f6e135829a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of a tactic to redirect users to potentially harmful external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9933

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 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://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/onpisntj0hk1sj0uur2fc487nd/lopevavedel.pdf In PDF document text
- https://imagebeaute.fr/userfiles/file/bamonixe.pdfIn PDF document text
- https://gullyracing.it/admin/ckfinder/userfiles/files/zogoridiwavujawinas.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f5613bd21---lubegiwozasinorivuso.pdfIn PDF document text
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607f2ca82d43b---fukonadozibogivisebavenu.pdfIn PDF document text
- https://sasalidayanisma.org/uploads/file/8856077098.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608667202cf8b---1213517517.pdfIn PDF document text
- http://zae.me/datafiles/file/88961848076.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d8c37a0a5---88571768241.pdfIn PDF document text
- http://sarljarry.fr/userfiles/file/54402363059.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4958c46a12---pogimizegovawateragoreko.pdfIn PDF document text
- https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a5957a0d09d---22720047756.pdfIn PDF document text
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf17c111c6---10943737340.pdfIn PDF document text
- http://daearesort.com/FileData/ckfinder/files/20210719_6E8D08C90A7A1BAC.pdfIn PDF document text
- https://ofertaromania.ro/ckfinder/userfiles/files/67957026717.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/8aa180923a4f61af4502e902484ed915/sexasepoviked.pdfIn PDF document text
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b446da5f47b---4463449584.pdfIn PDF document text
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6434dbdd9---40981027568.pdfIn PDF document text
- http://emotionpicturesfestival.gr/userfiles/file/divanikegoxosomo.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609480605f132---ledefiworiraradomoridilil.pdfIn PDF document text
- http://vizit-k.net/uploads/editor/files/57789331023.pdfIn PDF document text
- http://aylincinarli.com/fckfiles/file/wugofi.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6ced4de53---54944681975.pdfIn PDF document text
- http://hoadon-dientu.net/images/files/nadexamiwoserugivowebi.pdfIn PDF document text
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/53663659539.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=costo+del+libro+los+compas+y+el+diamantito+legendarioPDF link annotation
- 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c00d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC00D	16140 bytes
SHA-256: `00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b`
`font_01_sfnt_off0000d589.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD589	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000eda0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDA0	11140 bytes
SHA-256: `7287c2341f2dd781d00f948191c691937f4e77d8460e5447c786e5a17b92779a`
`font_03_sfnt_off0001073a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1073A	18164 bytes
SHA-256: `df166b40eab69a6c7302d802cbdcbf7cc12cf30b35f7468db09cb76a04301512`

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