PDF malware analysis — malicious · c0fbcfb18227f8c2

MALICIOUS

PDF

89.6 KB Created: 2021-06-27 01:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 3cdad8e13fccdc91f749900b5e57fb0f SHA-1: ade15e25e913b75ceb2a59770f01d8bd1d54a26a SHA-256: c0fbcfb18227f8c2b27f8fc97985908c62c6ea8dd1776a6e2e27138d02c51fba

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are likely part of this redirection chain.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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 http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/kujetolaboxibovipujonu.pdf In PDF document text
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcccf8eb6a---wosikodis.pdfIn PDF document text
- http://kcde.kr/userfiles/file/77620697814.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d95cded65---subogizenanuw.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/1f97d425bb41e4eb436997666fea8995/94786078493.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607442dbc400d---degogifukominiremadonado.pdfIn PDF document text
- https://hospvetcentral.pt/site/upload/file/83927155827.pdfIn PDF document text
- https://airshow-bg.com/file/82966518236.pdfIn PDF document text
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/6c7e674bfba49e216adfbbebe1dad9e9/zepifilogiweradunotukebop.pdfIn PDF document text
- http://olympusflights.com/files/files/zerikonateloroxojokamesuz.pdfIn PDF document text
- https://luminex.pl/upload/file/tugovawil.pdfIn PDF document text
- http://ekachaiguitarist.com/ckfinder/userfiles/files/gubozefelotituteritob.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/9d1cfqb9boeufbsl0oas6smgfj/16237167916.pdfIn PDF document text
- https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/3e0632d4aee965564e12939a159876b2/71746133017.pdfIn PDF document text
- http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/t5ni8lgepcnnohkfnrk7b08ur6/6786855437.pdfIn PDF document text
- https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b2c7df163512990e6171818032ffa31e/deforonamemiposewepes.pdfIn PDF document text
- http://aaaexpressac.com/userfiles/file/mapenabus.pdfIn PDF document text
- http://marketherballize.com/ckfinder/userfiles/files/57616338856.pdfIn PDF document text
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//20015551579.pdfIn PDF document text
- https://karinbentum.nl/uploads/file/tunurotikegifopigojosit.pdfIn PDF document text
- https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/5391fba82bbda27764f15da62e2a5e45/63171182982.pdfIn PDF document text
- https://actorconseil.com/files/file/5248574176.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfe7d0fc03---ribakokinid.pdfIn PDF document text
- http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/fexotejanugox.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608faa36452b8---94687515854.pdfIn PDF document text
- http://alimentosldm.com/userfiles/file/48074700240.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=strongest+dragon+in+skyrimPDF 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_off0000f9ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9AB	10828 bytes
SHA-256: `ff494837fa09cbf64b0e1998858ce1c1fd79e9f84294fa83f308ec82350fea79`
`font_01_sfnt_off00011270.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11270	17172 bytes
SHA-256: `97ec01185fbb4017efe08ed2080e3622b6137b6cd144bf6bfb97b2fd3f213848`
`font_02_sfnt_off00013f7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F7D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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