PDF malware analysis — malicious · 14749937a554fabf

MALICIOUS

PDF

81.4 KB Created: 2021-09-08 02:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 8618045b76e218aa02cdeaf3f0b7e0d6 SHA-1: 6ea9b446137227dce630930d62f5a2ba644cb906 SHA-256: 14749937a554fabf1ba7b9f63f8318a1fea097dbaa3857ce819c93e1417c9cb7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm directing users to multiple distinct hosts, many of which appear to be compromised WordPress sites or disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users to phishing or malware download sites. No scripts were extracted, and the document body was unreadable, but the URL structure and heuristic firings are sufficient to determine the attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9607

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://congtydaihai.com/upload/files/2954679908.pdf In PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee3c9520be6---neramupo.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a419af79499---43558027131.pdfIn PDF document text
- https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdcf17213b---2783582192.pdfIn PDF document text
- http://asja-doll.ru/userfiles/file/romogekemijojidivaladupa.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1e1d31a83---24184482259.pdfIn PDF document text
- http://forter.vn/hinhanh/file/bitawepuvesewivogobu.pdfIn PDF document text
- http://skupka54.ru/upload/m/21021715654.pdfIn PDF document text
- http://mtcongnghiepxanh.com/upload/fckimagesfile/89764631522.pdfIn PDF document text
- https://rpdev.org/ckfinder/userfiles/files/18075048046.pdfIn PDF document text
- http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/24279552738.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079339018365---60108501665.pdfIn PDF document text
- http://balone.net/_upload/file///59921458871.pdfIn PDF document text
- http://good163.cn/Uploadfiles/files/dukefanulad.pdfIn PDF document text
- http://cropscipublisher.com/files/upfiles/file/55152170400.pdfIn PDF document text
- http://ecohort.com/userfiles/files/4832134785.pdfIn PDF document text
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/afcc7e8d4a2df617fe6e9f6aaaa7428b/kiwiritirejabu.pdfIn PDF document text
- http://rothemtour.com/FileData/ckfinder/files/20210802_C5F6D91DF234810C.pdfIn PDF document text
- http://jinanxintiandi.com/userfiles/files/rekowos.pdfIn PDF document text
- https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/f9ff210d95bb68fbdbfd980f582c11b3/48365370476.pdfIn PDF document text
- http://bmsorganica.com/userfiles/file/tejusadepeliwonezusoz.pdfIn PDF document text
- https://euroroma-bg.org/files/file/nubiwafopivelamowolebanex.pdfIn PDF document text
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d79c3dd29e---jopul.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f45e0743202---56039559534.pdfIn PDF document text
- https://kaptenhoki.info/contents/files/43923869245.pdfIn PDF document text
- http://golden-candies.ru/webroot/files/files/pajaj.pdfIn PDF document text
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1608e40b6d2a61---refezedud.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=hangor+nodi+grenade+pdf+downloadPDF 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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b786.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB786	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000cf93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF93	1680 bytes
SHA-256: `6c08887b596ecb472c5a0482df8c2f828d83fc5b5d16111ed0caa1fced1b35dc`
`font_02_sfnt_off0000d78b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD78B	20132 bytes
SHA-256: `7dd31215b3b6e842f8fb0c2c50bfd6f7114ae3495b6dcd27685e6e154691a730`
`font_03_sfnt_off0001098d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1098D	10484 bytes
SHA-256: `adf37babf3e48d557cbd02d51fa3a285d653c1c30cb469dea7d077dfb329e7e0`
`font_04_sfnt_off00012136.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12136	16136 bytes
SHA-256: `8226e1194416575d4dfb473416c5443f51c99fc023abb92df21ee1a55dfcedc7`

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