PDF malware analysis — malicious · 0e50fee279ca1b2f

MALICIOUS

PDF

97.5 KB Created: 2021-07-13 20:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 96a70c5d69abe53c3887670bbc36643f SHA-1: 9dd0d66a1d2f0d55661039f1836a419ad8a0760d SHA-256: 0e50fee279ca1b2f8c7046748b039271a70193793bb3cb424aae83df8443782c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely serves as a phishing or malicious redirection tool. The file functions as a link farm, containing numerous URLs pointing to various websites, with several hosted on compromised CMS upload directories. The primary purpose appears to be directing users to potentially harmful content through these links.

Machine Learning

Nyx PDF Classifier malicious score 0.9733

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://ehomeforeclosure.org/images/file/xirer.pdf In PDF document text
- https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/803c1764e0ca839994968005b213f926/zotigipamigidiwari.pdfIn PDF document text
- http://skyline64reunion.com/clients/e/ec/ec378541aa9b73e2b99de5ca5545ec21/File/73035438151.pdfIn PDF document text
- http://boeschfamilytravels.com/clients/43210/File/44406874308.pdfIn PDF document text
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/b6f25709305dbc12fa83ac174dd2d616/34320227782.pdfIn PDF document text
- http://vce34.ru/attachments/file/1947312505.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607703cb3e21f---nosulebatozuxorigejofu.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6172481fe---31774130000.pdfIn PDF document text
- https://etadelloro.it/images/file/nugetivop.pdfIn PDF document text
- https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c65fcd98e5---nasasedoxewifosedamu.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/lt5opjjlfhb8vdfvig05idudr9/padesasorinal.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e080763b7d---zoxosekimega.pdfIn PDF document text
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ccad61642f---48428913093.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/57ad251531538a720f09a6120357684a/seliwotofip.pdfIn PDF document text
- https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/2vgn40b8v1atmhf73qg6coofnh/2452609767.pdfIn PDF document text
- https://aarhuskortet.dk/images/file/7561815223.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085bc571386f---pazibojuwujajovo.pdfIn PDF document text
- http://hi-techfiber.com/userfiles/file/zapataxewutevijelotefatex.pdfIn PDF document text
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/e2548d55a56c429d2f8973f7f1fbb4fd/kebifonokuwenov.pdfIn PDF document text
- http://chieucoingason.vn/files/87033059382.pdfIn PDF document text
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/3fa40a28747ecbd6b54313207f0d5243/zatojew.pdfIn PDF document text
- https://clubon.top/uploads/files/72036613981.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce68a5d697---23394862476.pdfIn PDF document text
- https://greenline.bg/userfiles/file/10603346126.pdfIn PDF document text
- http://cp-1.ru/userfiles/files/64318298429.pdfIn PDF document text
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/4fq3ajhtteprij9ij15o9efgv0/pavigagepipenove.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=vodka+and+sweet+and+sour+mixPDF 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_off0000fbf3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBF3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00011405.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11405	20908 bytes
SHA-256: `d412fbaa042e1c531c54b773a7517cf6c2d88a058eb76ca843c13e5c4d2bf45b`
`font_02_sfnt_off000148d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x148D1	10712 bytes
SHA-256: `91345ff0f69fb42fe08fc47fe436eea337e6bac9bc9ea3157bbefb34355b2362`
`font_03_sfnt_off00016180.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16180	16312 bytes
SHA-256: `7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae`

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