PDF malware analysis — malicious · c8aed033e225b728

MALICIOUS

PDF

85.1 KB Created: 2021-06-26 19:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: 6725edc2364da8aad17e9f2b7a4a7212 SHA-1: 4cd4490b8230e5d13106d83b126ddd61107cdad6 SHA-256: c8aed033e225b72830c58656012e3f4e3ff7bf10814f8c7fa402df4e2fd963fb

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous links pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The PDF structure itself does not contain readable content, but the heuristics strongly suggest it's a lure for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160749a3a3eac2---vuzawokopugexozuzenof.pdf In PDF document text
- https://agentcctv.com/userfiles/file/nomimifosevixubux.pdfIn PDF document text
- https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/90610e77e4ad8d41348e06d1ea0dc436/1348169955.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/j9tivr2dsmn05huj5fhenps71a/denuwiluwojuvutene.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a556b37e310---zojoduk.pdfIn PDF document text
- https://conexusinternational.com/ckfinder/userfiles/file/1659837601.pdfIn PDF document text
- https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/44290981b34c9d622013548f3e30efbb/9050614195.pdfIn PDF document text
- https://arichaindia.com/userfiles/file/80417526678.pdfIn PDF document text
- https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/pic681ciuaicq3cd8oqjjjmb8u/57688810448.pdfIn PDF document text
- http://yacpa.org/yacpafiles/file/24989053078.pdfIn PDF document text
- https://eastmanllc.net/ckfinder/userfiles/files/1023642811.pdfIn PDF document text
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b00aebc5c---tarabujisujuzoroxukofime.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a0b08d4b6---dizitone.pdfIn PDF document text
- http://ssujaxchapter.com/clients/83257/File/2713714793.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/sukerososivikipukovigabax.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16081f8e6bd81c---jalikosekegomol.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b7b51ad69---razeko.pdfIn PDF document text
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c10e94c00b1---88006615177.pdfIn PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/7e1b88797af9897b3c1383464f01259a/lojipegabozixuro.pdfIn PDF document text
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/9257f10ff13ce946d401cc102f49044b/52266432716.pdfIn PDF document text
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/7fb265fe9a4c97db19fb635c9430cb9a/48901069914.pdfIn PDF document text
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/a969967937e3a5e54c36db1af50893cd/82530965920.pdfIn PDF document text
- https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/1092666fd8ce88fe03cb6b7afcda854f/93532001053.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=company+overview+slide+templatePDF 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_off0000e9fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9FA	10852 bytes
SHA-256: `94f8908b282410deb193827e21fecfc54e17c7973f835d39dfa06fad9f69aa3e`
`font_01_sfnt_off00010317.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10317	16844 bytes
SHA-256: `f141556c4cd9ec6070d33d5c7f6e7cac9bc17307958abb5d2baf1c6c6afbf422`
`font_02_sfnt_off00012f02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F02	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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