PDF malware analysis — malicious · 8f9afcbc468cd6e5

MALICIOUS

PDF

81.7 KB Created: 2021-09-04 20:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: cadea4ce75429b01931d38f53fd771fe SHA-1: 132a3cdab060c26df49b8af27dc01755513028fe SHA-256: 8f9afcbc468cd6e52fb8439556dd56b909d39b77a8e3af8409c9019cb760bd85

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links to external websites, many of which appear to be compromised or disposable hosting, suggesting a phishing or malware distribution campaign. The ClamAV detection further supports its malicious nature, identifying it as a phishing trojan.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

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://crewmak.ru/uplcv?utm_term=the+difference+between+formative+and+summative+evaluation+pdf PDF link annotation
- https://prestinireedcorp.com/userfiles/files/78529726860.pdfIn PDF document text
- http://renovator.cz/files/file/98808168928.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/sfc3kir1e2qk62koqkrtep7oj5/sojutaxodasekokuzenoda.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/drlm711nbla94cf624elk4chpv/14983764435.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/93ee817264ac3ef8de727754f2e5dda5/20062444631.pdfIn PDF document text
- http://brbud.pl/userfiles/file/wuzeluwudopaxofiparixu.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/k3jdajknfoh39q0c8ems9go49s/36225547428.pdfIn PDF document text
- http://gamboeng.com/assets/ckfinder/userfiles/files/89332080557.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/34o4c604tudk0m5i9odh3h8je5/wikixewofali.pdfIn PDF document text
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/pocjfe9prlkuqbd4dj82c91d54/73082601128.pdfIn PDF document text
- http://reversetheclocknow.com/ckfinder/userfiles/files/42317586402.pdfIn PDF document text
- http://architettosirocco.it/userfiles/files/fubukekol.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b872e8e5871---lelisizalok.pdfIn PDF document text
- http://hagelkonzept.de/userfiles/file/88088326236.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e14c7112afd---guxuvepak.pdfIn PDF document text
- http://towa-aaa.jp/userfiles/file/61756070783.pdfIn PDF document text
- http://hoanggiaphatland.com/uploads/image/files/81529863801.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f0775e7a35a---zalin.pdfIn PDF document text
- https://cnn-logistics.com/asset/files/jajigifazowemit.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/7l8cnksaqn2hu5ajkddhon0cag/gutixod.pdfIn PDF document text
- http://obasekiestates.com/UserFiles/file/wuzulopuvotek.pdfIn PDF document text
- https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4cb46156b5ace7322d28fa2eb62cdd25/89855084381.pdfIn PDF document text
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/f4471dcea9df9c4c8b612f3ed12c1692/28750482888.pdfIn PDF document text
- https://readandenjoy.ae/userfiles/files/15928916721.pdfIn PDF document text
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/8ec97c1ha3jkn0be3q2l3u7bop/nadafikem.pdfIn PDF document text
- http://ristoranteibucanieri.it/userfiles/files/18761039207.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_off0000d9e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9E5	11240 bytes
SHA-256: `bc358ac1e1142bab265dddebfa8039eb7ac99a2f594ed8a71291f2e3cd26b2ff`
`font_01_sfnt_off0000f3e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3E4	17236 bytes
SHA-256: `007ef5752a6a89328b850e761740b320988b54cd9855925c2adf2f52a37fb146`
`font_02_sfnt_off0001204e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1204E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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