PDF malware analysis — malicious · ed0eeb5ea62b2a6b

MALICIOUS

PDF

89.5 KB Created: 2021-07-04 06:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 61e908059659fcb9df744459014949b1 SHA-1: 788ef7917fc6b839978a120c997a30916a1fc336 SHA-256: ed0eeb5ea62b2a6b4567fcc3e8f36f6cac8081376f223607cff221a8123e7209

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to distribute malicious content. The heuristic firings indicate a phishing and link farm pattern, with ClamAV identifying it as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the overall structure and URL distribution point towards a phishing lure for further malicious downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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://huntic.ru/uplcv?utm_term=procreate+free+download+android PDF link annotation
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210609070657.pdfIn PDF document text
- https://notrepanierbio.ch/userfiles/file/tipovupawuxipi.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/38d8t0g4ugg2o2tfbotapc6267/71603610375.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4704ccce8e---bamuperigimuka.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/zidexaruzomufe.pdfIn PDF document text
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7c150b440---56574444818.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072e9ef91324---fekixapilekifaraxawow.pdfIn PDF document text
- https://angkoronetour.com/userfiles/file/30269013279.pdfIn PDF document text
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/2ba6bsu54qnummsq8bemlno9ia/89477058648.pdfIn PDF document text
- http://suacuacuonthanhhoa.com/upload/files/nupawiv.pdfIn PDF document text
- http://studiostocchi.eu/userfiles/files/87398854067.pdfIn PDF document text
- http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607248104ac83---41071817523.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f48d05e466---dedufizugopasutekaxode.pdfIn PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607174c75b010---4072373693.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf29ede5f6---28503324867.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/1f8b6a53ef21ea39dc6c2b2ec3f94a25/sibilukerejova.pdfIn PDF document text
- https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/2583d1d15ffa6455ea4d10546c7ab80b/12982636654.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe76012f85---58152840361.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/or2qk89qj3ln9bbrfutp7rstj0/jugefosejunoragud.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a10e5297d37---9640530779.pdfIn PDF document text
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c19cc216b27---19794059764.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/6e1608efd3ddafef40adbddcee6abc36/28482320668.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/6e95d0e7f1d81bdd2d9ebddeee250b77/69517966804.pdfIn PDF document text
- http://gesundimjob.at/images/content/files/6594743040.pdfIn PDF document text
- https://transit-connection.com/userfiles/files/kokariwasawuwi.pdfIn PDF document text
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5251f488f1---defute.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_off0000f922.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF922	18140 bytes
SHA-256: `f520a488e6b480a5bc1958bd46d3cc54ff7cb52586a3399f42bf5bea5327994d`
`font_01_sfnt_off000128da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x128DA	10388 bytes
SHA-256: `92ed7d0d135825ea03078d76fd45f03b70f7fa6143d5ec50cbd48f6a362e58ec`
`font_02_sfnt_off0001407e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1407E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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