PDF malware analysis — malicious · bd1337e5e482e7cc

MALICIOUS

PDF

91.4 KB Created: 2021-07-02 04:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: d82ab6213e3aadb8a19fbdbd8653a191 SHA-1: 2efb4aeedbf72e875456ba1e9e4632a0a3576c77 SHA-256: bd1337e5e482e7ccd9d543a817cbc9aa85b4da373067aba86d9b0643465ad5f2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the nature of the links and the heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9924

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://garglob.ru/uplcv?utm_term=shapes+sides+and+corners PDF link annotation
- http://luatsubienhoa.com/upload/ck/files/56731801842.pdfIn PDF document text
- https://aljuboori.com/userfiles/files/46164777675.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ga2pibt0slol6itjmshlin5gq2/nuvaxa.pdfIn PDF document text
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c70d696f73---vizewofodederivozado.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c7970764fec---81478886765.pdfIn PDF document text
- https://alnahamgroup.com/userfiles/file/xiremufegabozojuxo.pdfIn PDF document text
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/7290aa638f9a5a93c954823f1885ffa2/mibijirosejaxisejuvabis.pdfIn PDF document text
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/46tor1vb21gc54arq6iksjvup4/vogalagizazano.pdfIn PDF document text
- https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/98d9619b2c500aac2b40fe00d07f523f/25438935232.pdfIn PDF document text
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/4e87ff8825ca2b0c33572ba39d2f291b/sewipelomawaxarugitage.pdfIn PDF document text
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/d04e89976a439bdddfd3fec9a72a6ba3/minibewejefojokafubupor.pdfIn PDF document text
- http://teaandtiarasottawa.org/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/puposujatemop.pdfIn PDF document text
- http://hoctoeic24h.com/upload/files/96830967486.pdfIn PDF document text
- https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/26746674557.pdfIn PDF document text
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e99cbb3a2c---diwefexotaxuvetiz.pdfIn PDF document text
- http://savaksangida.com/resimler/files/nelusebobojivaluneguluta.pdfIn PDF document text
- http://emmanuelmissionarybaptist.com/clients/74938/File/70846850069.pdfIn PDF document text
- http://kochamsushi.pl/UserFiles/file/zukafatepefa.pdfIn PDF document text
- https://xanbiente.de/userfiles/file/39297516721.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080106759f2c---75549364135.pdfIn PDF document text
- http://pusancard.com/userData/board/file/bexogito.pdfIn PDF document text
- https://llsindia.in/FCKeditor/file/4718107324.pdfIn PDF document text
- http://fw-simple.com/uploads/files/93576217652.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e785ef057---pixijile.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC0E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010420.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10420	17664 bytes
SHA-256: `e6588659ffa01610cf54be840b03a49bfac1d65e9aba2810023a7b42e153613b`
`font_02_sfnt_off00013288.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13288	16132 bytes
SHA-256: `eb83fb48a2f60ac59fad768156047f025764cad4052c8f34695a9c8dd2456ad8`
`font_03_sfnt_off000147fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x147FA	10544 bytes
SHA-256: `57e7d55cc0fd746b1746de12dc72de69a9874c74b5e8c6ec3ba624a77dd24130`

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