PDF malware analysis — malicious · fec0a3e2c67517c5

MALICIOUS

PDF

82.5 KB Created: 2021-09-18 03:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 2fcbdff1633e6373966983a908232feb SHA-1: 673b946f3f3272481dd3088a92af95b75d6376a8 SHA-256: fec0a3e2c67517c59376db69c5331c4fa201886f050dd3fc8b9e81f45ad0bafe

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF document is flagged as malicious by ML classifiers and ClamAV, and exhibits characteristics of a credential harvesting lure. It presents a fake MFA or one-time code confirmation page to trick users into divulging sensitive information. The document contains numerous links to external sites, many hosted on compromised or disposable domains, suggesting a phishing infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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://steakpluspizza.us/userfiles/file/67118622950.pdf In PDF document text
- https://ekinyalitim.com/depo/sayfaresim/file/gelogimu.pdfIn PDF document text
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/dtq4f36dbcbpv3n9hh1i4s4tlm/bepiwikolazadux.pdfIn PDF document text
- https://kalyna.ua/sites/default/files/userfiles/file/65351699935.pdfIn PDF document text
- http://agrostroi-proekt.ru/ckfinder/userfiles/files/46978166689.pdfIn PDF document text
- http://www.dereformasenalicante.com/archivos/files/17468357733.pdfIn PDF document text
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/161452aeaecc5d---gegubevofebi.pdfIn PDF document text
- http://glamour-nsk.ru/ckfinder/userfiles/files/91332919945.pdfIn PDF document text
- http://mywayrtk.org/userfiles/file/jujolorufubojixure.pdfIn PDF document text
- http://valdhans.cz/userfiles/file/25404630102.pdfIn PDF document text
- http://goodlack.cz/userfiles/file/gukejo.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/edf79db3236b8e88388626332dd9a4af/gubatiwuro.pdfIn PDF document text
- https://lensprovn.com/ckfinder/userfiles/files/wujifavogaronoxu.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/39350167947.pdfIn PDF document text
- http://pujcovnanaradi-tvarozna.cz/userfiles/files/kuwurine.pdfIn PDF document text
- https://plasy.com/uploads/file/8348252193.pdfIn PDF document text
- https://usssecuritate.ro/userfiles/file/jenosabikofi.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=ivms+4500+android+setupPDF 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_off0000d19a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD19A	21968 bytes
SHA-256: `9b301469d8ca3235ef2879bc2b61c02bfb9a43c00a42b5a1952af3bc6fd00237`
`font_01_sfnt_off00010bf4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BF4	10956 bytes
SHA-256: `1fceff07fa7d811f6ebe011ff626d23e8890b3e40422539cc153d591b7e34a83`
`font_02_sfnt_off0001256c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1256C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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