PDF malware analysis — malicious · 7a5351092262265f

MALICIOUS

PDF

85.3 KB Created: 2021-07-25 05:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 1fb774aa0aabdc5532c3855bdc4aabac SHA-1: 80e1ea89ef04266cdced6ac4223e8b9cb44a255b SHA-256: 7a5351092262265f37ccc105e71b3c1b39add2fb57249bd5ff05d03231e17a11

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. The embedded URLs, such as http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983216b70c8---lelopuxewefupotogifawino.pdf, are key indicators of this malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/01dtvgreqios8l8q5d78vpn4k5/65986093382.pdf In PDF document text
- https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a47df539961---dagakabavajowenedidi.pdfIn PDF document text
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/f02fd71f920d4656420d8f40e7e16f2c/woxewarigisetezoxanolepe.pdfIn PDF document text
- http://1975geegees.com/clients/78603/File/91548229974.pdfIn PDF document text
- http://0vote.com/ckfinder/files/81663596064.pdfIn PDF document text
- https://paperland.bg/uploads/file/bakodajusan.pdfIn PDF document text
- http://whsclass1968.com/clients/f/f8/f849445bb2fb8f42e7c863050dc1ba38/File/58802347522.pdfIn PDF document text
- https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/nodekji5snk8e5qmpdh8ib1m7q/6438860728.pdfIn PDF document text
- https://stopserv.ru/files/file/kuvimebisezi.pdfIn PDF document text
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/7dfef0e2aa8ad32f5bf1bdb9eb68759e/84126176351.pdfIn PDF document text
- http://bet-balance.com/userfiles/file/wibuwosuf.pdfIn PDF document text
- http://n2nlah.org/UserFiles/file/duzuzajemikunefakor.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb2a3ecde4---35673411891.pdfIn PDF document text
- http://springbook.no/files/xubebuli.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57dbaa337f---14130929307.pdfIn PDF document text
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983216b70c8---lelopuxewefupotogifawino.pdfIn PDF document text
- http://bloomx.com/sites/all/sites/bloomx.com/files/lumozij.pdfIn PDF document text
- https://securityguardsupply.org/php/uploads/file/mebexusukijulexuwu.pdfIn PDF document text
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f20c8873a9---3175598683.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160883134ac710---9252364887.pdfIn PDF document text
- http://highendschmiede.de/highendfiles/file/mufuz.pdfIn PDF document text
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/0fe1a7cb129a884c98a46e698b467352/11227374900.pdfIn PDF document text
- http://www.nomorcantikjoss.com/file/23058432616.pdfIn PDF document text
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a422c18bbad---51154450691.pdfIn PDF document text
- http://envigest.cz/upload/file/6571145443.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=student+attendance+record+templatePDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e638.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE638	18752 bytes
SHA-256: `73d4b17c2365b292380c55238f316785497e3f7b9deec413fe7944b05e7eb2f2`
`font_01_sfnt_off000114d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114D9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012cf0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12CF0	10588 bytes
SHA-256: `e0e7926f029d357449d3b136cee08871304a65b31c54254a53314c15bdab993c`

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