PDF malware analysis — malicious · 13180a70cc8512fa

MALICIOUS

PDF

68.8 KB Created: 2021-09-27 04:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 14f278ef4b08255657f31b9bd3b006e3 SHA-1: 779ecb3ccc9ef654bdfadfa1aea90bdfe101bc79 SHA-256: 13180a70cc8512fa1816d71f5f2126c503b11e55e8e845cd745d23b2615c13cb

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9965

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://allytemp.ru/uplcv?utm_term=hd+porn+videos+apk PDF link annotation
- https://atkarisuli.hu/userfiles/file/84426678886.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/bee12515680d979999d84f5697f3952e/92097849214.pdfIn PDF document text
- http://ytlcases.com/userfiles/file/bavufewokopavaboxatob.pdfIn PDF document text
- http://adbuilder.at/ckfinder/userfiles/files/juzevurux.pdfIn PDF document text
- http://potlista.com/file/files/85493267746.pdfIn PDF document text
- http://www.psyforyou.nl/upload/fckeditor/file/vaxixavud.pdfIn PDF document text
- https://ymvii.com/admin/upload/files/59148278940.pdfIn PDF document text
- https://bloomeng.com/uploads/66397297997.pdfIn PDF document text
- https://812423.qqtogeljackpot2.com/contents/files/dibexez.pdfIn PDF document text
- http://clarksville.net/wysiwygfiles/file/23180205159.pdfIn PDF document text
- http://www.pes.edu.mn/ckfinder/userfiles/files/89393319908.pdfIn PDF document text
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/a2bb8cae89ac9aba1cdb10695a725d7f/21673306995.pdfIn PDF document text
- https://florerialafloresta.com/ckfinder/userfiles/files/43527670558.pdfIn PDF document text
- https://bacninhonline.com/webroot/img/files/74510705512.pdfIn PDF document text
- http://rakuteriyakicanogapark.com/uploads/files/potavotelikumejojob.pdfIn PDF document text
- http://xn--9w3b270a7kf.kr/ckfinder/userfiles/files/dozimejefukiv.pdfIn PDF document text
- http://vincitydata.com/uploads/ckfinder/files/84702455145.pdfIn PDF document text
- https://nakatarikaszel.pl/app/webroot/userfiles/file/mubugala.pdfIn PDF document text
- http://infrabud.eu/fckpliki/file/99293339654.pdfIn PDF document text
- http://lightofislamonair.org/uploads/files/mixari.pdfIn PDF document text
- http://full814.com/upload/files/23312260342.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/il881edmph48q5t5gg7ni0m562/86224792824.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_off0000ace7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xACE7	10392 bytes
SHA-256: `c536e86138c8cdb738983257fb4d51f9d63afc03536bf66f72e049f80a0be3f9`
`font_01_sfnt_off0000c475.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC475	15880 bytes
SHA-256: `58a4a9b50e031c9f1650ffc07a6ba3bc2d5d8fa8193aafeec99383b19aa13f15`
`font_02_sfnt_off0000ec59.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC59	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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