PDF malware analysis — malicious · 02effaccbc18764d

MALICIOUS

PDF

89.9 KB Created: 2021-09-01 08:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02

MD5: 6951bb8a09474d30e5b3d4f1741a83c6 SHA-1: a28da90f7c18019b1ca54ac5fc6ee13ed905fef1 SHA-256: 02effaccbc18764d534bee19162dce81ce10d267463319524b3005d6b8cf7795

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous embedded URLs pointing to compromised websites, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

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 https://huntic.ru/uplcv?utm_term=angry+quotes+for+love PDF link annotation
- http://mgtofubbq.com/uploads/files/jarenat.pdfIn PDF document text
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/aa06f49a9613bd15e1978761629011a6/gazeli.pdfIn PDF document text
- http://workcoop.org/fckeditor/userimages/file/20210828180331.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982f3fbae2b---40424395204.pdfIn PDF document text
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854482b2ed2---2110794059.pdfIn PDF document text
- https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/03fbc0c3f3671ee7fa2bb60ba54acb12/38608234938.pdfIn PDF document text
- http://thuduchouse.vn/pics/file/62303814266.pdfIn PDF document text
- http://noospc.ru/SITE/files/editor/file/50839117566.pdfIn PDF document text
- https://angkaganjil.com/contents/files/zajisupizifewef.pdfIn PDF document text
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160af1dfaee01f---79436135419.pdfIn PDF document text
- https://fruzsiflame.hu/userfiles/file/6286813952.pdfIn PDF document text
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/7336bd3bbc8d83c805ca2c85ca9c48dc/24954964899.pdfIn PDF document text
- http://foto-preiss.at/upload_files/files/dopunejetunajes.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1611f35dab74f3---fepusopamugi.pdfIn PDF document text
- http://ural-kip.ru/admin/ckfinder/userfiles/files/60988011410.pdfIn PDF document text
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/043caab4261cc8bed3d4e9085430cdc1/59619389432.pdfIn PDF document text
- https://debo-fit.be/userfiles/file///dekuzigefomiwide.pdfIn PDF document text
- https://fetogram.com/images/upload/files/53418480958.pdfIn PDF document text
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff13419e701---33805510089.pdfIn PDF document text
- https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/9mspa75j435ja2mc68950r8qrs/bexegujutuzowuzudesizerov.pdfIn PDF document text
- http://cdkkck.com/uploadfile/file/20210602203619.pdfIn PDF document text
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/e3564334bc72ad0ca0f1ac2c45c2f01e/rojodobositela.pdfIn PDF document text
- https://motoquadro.de/userfiles/file/nazasepexerunip.pdfIn PDF document text
- https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/lalojoruxoju.pdfIn PDF document text
- https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/d9cb6a63bcca36fdc4c08729d0c360f6/49331883724.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/d6huvimightjmnjqj0n7s692f2/sodiduto.pdfIn PDF document text
- 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_off0000f98d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF98D	18752 bytes
SHA-256: `d558705946eb16cb77b4873d076801936f6a0d4611bb29623da99eafbfdc7021`
`font_01_sfnt_off00012a1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A1B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014232.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14232	10544 bytes
SHA-256: `0f17d245a91e5e9f067eb9da8d9c5a19cc986275a8729a42ddd1861d90e3cc8b`

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