PDF malware analysis — malicious · e2e42207234b198d

MALICIOUS

PDF

82.2 KB Created: 2021-09-04 13:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29

MD5: ce1a9c8395d64df3ec67c3329f5201e2 SHA-1: 99c7d80b9c2a684c1a036248738160cf50a3f1d9 SHA-256: e2e42207234b198dd2ba785b6e142ace730909db644b87f65ae6d4dde1152757

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely serves as a phishing lure or a distribution point for malware. The document functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting sites. While no scripts were explicitly extracted, the nature of the links suggests potential exploitation or redirection to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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 http://assessmentinsight.com/ckfinder/userfiles/files/9034918109.pdf In PDF document text
- https://latrinquette.com/upload/editor/file/87764284000.pdfIn PDF document text
- https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/61ae5a6931ea324f9751b6dae1009051/sejabaxugejilodimoxud.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/r98kq70umagmhnnravj6c6bph1/43002058184.pdfIn PDF document text
- http://archi1919.com/smlclub-files/file/28557007565.pdfIn PDF document text
- https://wintechindia.in/ckfinder/userfiles/files/sejizesalejuz.pdfIn PDF document text
- http://babamoleskine.com/files/file/44126861575.pdfIn PDF document text
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/1bbb4d57209ca73df0d407b64651b38c/9917432449.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e264437d34d---kawejofidulatasalagixo.pdfIn PDF document text
- http://cuoredicane.it/userfiles/files/93947557962.pdfIn PDF document text
- https://wilocom.ro/ckfinder/userfiles/files/dononux.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611cdb2160220---95590074993.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/m3e0s1nev0s3vm0jirt8msg0h7/28290712701.pdfIn PDF document text
- https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/3ebcuqdds6ggspvporv8drhes0/xowovuxetilepimikipiza.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613032ebe7b9c---kilakubabibalumo.pdfIn PDF document text
- http://ned.ru/uploads/files/jekupamesuvotewetube.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb166e690f---33184671570.pdfIn PDF document text
- http://synowka.pl/galeria/file/kulavova.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/6l7iklefim41k73mndoou446i2/57256814346.pdfIn PDF document text
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/5pa7rorgt0v2q02abtj3udv7lk/nibirudodub.pdfIn PDF document text
- http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pudupiwiti.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085fb9335360---68098413596.pdfIn PDF document text
- https://binarbaidfabrication.com/public_html/userfiles/file/7906134861.pdfIn PDF document text
- http://reutlinger.pl/userfiles/file/35161074393.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8aba2f0c2---jametevixigumut.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f273b9ece3---40477210270.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=bergamot+doterra+pdfPDF 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_off0000db34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB34	18460 bytes
SHA-256: `00bd3286681d9c490c17af99693d97f18c9cc4e54e3e41c1d696d169a3b7de4f`
`font_01_sfnt_off00010b7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B7F	10484 bytes
SHA-256: `579c0faf22100e8db424b605dee70ffb8b4465dcc4d736e98eb27957ef5baa99`
`font_02_sfnt_off00012330.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12330	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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