PDF malware analysis — malicious · 09c23dcc197b2d34

MALICIOUS

PDF

100.6 KB Created: 2021-07-28 01:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: f87776ec8f68283b94e2d9d02eb8c1c1 SHA-1: 611c9891f79c0e51cc6ffad55b8dba3139607a24 SHA-256: 09c23dcc197b2d341c544c3dcfee4dafae8e16182f71f09e697f4776c5dea4b5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many of which point to compromised WordPress upload directories, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and link farm behavior are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9931

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://clarasonic.com/upload/file/76951168978.pdf In PDF document text
- http://erdbau-rauch.at/71181042155.pdfIn PDF document text
- https://smsenerji.com/resimler/files/gusaluwawavogijezo.pdfIn PDF document text
- http://szguilong.com/userfiles/files/wirudu.pdfIn PDF document text
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b12ba9bbd99---wonura.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606cac133a22a---vuziranikuzute.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098eb88e52ff---tebumogunid.pdfIn PDF document text
- http://nissanotogovap.com/uploads/images/files/mufajusikepusopipu.pdfIn PDF document text
- https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16073214a88ac0---64225256351.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086d05c692e2---garizoliwodifom.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1f4422220c---19820319388.pdfIn PDF document text
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d8c591ff3---xevurunobinitad.pdfIn PDF document text
- http://www.gesas.it/media/mailinglist/file/7674623559.pdfIn PDF document text
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a442d580d---zegirevijegilufenik.pdfIn PDF document text
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/1aaccfb5995b5134c8dac6a191b7f5f0/sazekarulobogobanit.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/4368706712d57007e557adc3a6f53182/relaxitesak.pdfIn PDF document text
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/884134dc4350693730012f3bf09adf0d/9481738562.pdfIn PDF document text
- http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/jvoa04s83mjm0ffmqe1fnubik0/xodizejavajulapidi.pdfIn PDF document text
- https://cakesandcupcakes.net/userfiles/files/32461200169.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/23bd85898b1be23518728ef58278ee1b/5001230853.pdfIn PDF document text
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097ee803a374---fonokab.pdfIn PDF document text
- https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/87fae19c3c1bfd7734452269b7d5e469/zateloxinak.pdfIn PDF document text
- http://hkt-optics.com/hkt/images/userfiles/file/porivufinojenin.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/ab5ee02a8585e187e85849e8d25944a2/58812361709.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/gumub.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/de81a4070a4366a6ad74cf2684647178/vuxamirigafod.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=frases+en+sentido+literal+del+poema+sonatinaPDF 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_off000124ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124FF	18456 bytes
SHA-256: `06e812eb2d3bce3af6ee318d63f8ddf5b9dc7b58e0d1e6ecc7ae9e4e5d8f2cd9`
`font_01_sfnt_off000153d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x153D5	10528 bytes
SHA-256: `38e01774b7c74a0146f4fe36b47bbe9afb1801b962c9a65f7051a9fed01707d7`
`font_02_sfnt_off00016bc0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16BC0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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