PDF malware analysis — malicious · 019260367ceb9fe6

MALICIOUS

PDF

83.3 KB Created: 2021-09-15 02:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 87e94751f8ce040ad4b0aa448fbf4197 SHA-1: b7b3e769438a2bf410b913e7a281d3beb94566eb SHA-256: 019260367ceb9fe60190de75c55564f9a2336007e74e8bc5be535be73eaaddc1

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to websites hosted on compromised CMS platforms or utilizing UTM parameters, suggesting a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users into downloading further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9950

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://philabc.ru/uplcv?utm_term=gfx+tool+ultimate+for+pubg+with+game+booster+apk+download PDF link annotation
- http://bebelino.ru/userfiles/file/lezuvofovuwekanu.pdfIn PDF document text
- http://www.jokilaaksonratsastajat.fi/file/sigamidizuvo.pdfIn PDF document text
- http://ekotop.eu/userfiles/file/gedesebonilesesedosukolaf.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/47506916510.pdfIn PDF document text
- http://studiocommercialedelpiano.it/userfiles/files/39216753089.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16135f6828d1bb---sekawogudiseku.pdfIn PDF document text
- https://sunsetlearningcenter.com/userfiles/file/jorujudekasu.pdfIn PDF document text
- http://chinasoftcore.com/userfiles/file///73330214196.pdfIn PDF document text
- https://glbtrader.com/userfiles/file/zadovirejaxaz.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe8971317e---52253840387.pdfIn PDF document text
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/351d473becd0fea9b048acc8296321f0/63914518545.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/992e9d2e4d319a3867f5f40807f4176f/83213002425.pdfIn PDF document text
- http://thanhcongtechtra.com/upload/files/zirilijinamodosavusozisak.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/161411b55c5a26---41191892527.pdfIn PDF document text
- https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/58181026291.pdfIn PDF document text
- https://sentinels.ro/userfiles/file/81747658646.pdfIn PDF document text
- http://szyqjsj.com/UploadFile/file/20210907025248034.pdfIn PDF document text
- https://aljuboori.com/userfiles/files/50698254297.pdfIn PDF document text
- http://goddesshair.net/upload/users/files/zirover.pdfIn PDF document text
- http://donauwell.at/userfiles/file/monag.pdfIn PDF document text
- http://asiadomainstore.com/userfiles/file/18423769097.pdfIn PDF document text
- http://kleinschaden-expert.de/userfiles/file/xisagixijidotawizijuguzu.pdfIn PDF document text
- http://lrm.mcdonalds.ua/ckfinder/userfiles/files/79969547483.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/e13db616cbf09a1fc40961bccaea5364/midigotaxazipekemulegavo.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_off0000d3fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3FA	20732 bytes
SHA-256: `f5fe2d7c8f9c9b5ed457f3e0ea109d8e7f65596e6b9710acb9a953bc768980b3`
`font_01_sfnt_off00010a58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A58	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001226f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1226F	11504 bytes
SHA-256: `78a167e85b9f02e7b77e0b988c14dd746607de303f3b65fabcc4772d90ba61dc`

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