PDF malware analysis — malicious · 43215619e8375fba

MALICIOUS

PDF

82.1 KB Created: 2021-09-05 06:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 110105dd2eb892051da3f3c55cc947df SHA-1: a1984fa9e4a574f8db354037b7ac4c5135e8a468 SHA-256: 43215619e8375fba097d571473eaa93e996e8e1d5c7db6b3d9d40838f2eab0ba

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains, likely to distribute further malware or conduct phishing. The presence of numerous external URIs and link farm heuristics strongly suggests an attempt to exploit search engine rankings or trick users into visiting malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9764

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://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16085872b75921---99640573534.pdf In PDF document text
- http://coytex.net//ckfinder/userfiles/files/moworojizoliloj.pdfIn PDF document text
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77b56ae835---50407756930.pdfIn PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/945d766fa4f29f93866d0a973985289b/titexas.pdfIn PDF document text
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f67d2124b---63385085743.pdfIn PDF document text
- https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/zamumexugogonud.pdfIn PDF document text
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c04ae95ad48---33395999417.pdfIn PDF document text
- http://ctnphrae.com/ckfinder/userfiles/files/86223446322.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/4fd05c1789f5f218bd25c8916d16b86f/36810327100.pdfIn PDF document text
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9176911d7---wavijoxuv.pdfIn PDF document text
- http://business-baltic.com/myfiles/dok/todureb.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/4bbc3cadc5df09eeb4ace9ec27efe500/ritosarizadepewe.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160943ab2c0c6c---96956069199.pdfIn PDF document text
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1607583aa39008---vasegatapifusasupugexupet.pdfIn PDF document text
- https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/e7a560b04ecb898a4b2a217aec455633/63172592345.pdfIn PDF document text
- http://dryoucosmeceutical.com/userfiles/files/jexapevemukemitab.pdfIn PDF document text
- https://gbagencement.fr/uploads/file/wedawejazozuzig.pdfIn PDF document text
- http://ahchala.com/img/file/76540312422.pdfIn PDF document text
- https://balajihighfields.in/userfiles/file/rekidowilusolixanumedado.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f51fd77f43---98470545580.pdfIn PDF document text
- https://matfplayer.com/calisma2/files/uploads/bugeresiranewalom.pdfIn PDF document text
- https://www.bevillelecomte.com/ckfinder/userfiles/files/ravufoko.pdfIn PDF document text
- https://raljob.com/userfiles/file/58928870520.pdfIn PDF document text
- http://leguido.net/files/fedutewuwelatigus.pdfIn PDF document text
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702c9f81fde---pibebigorebojukafavavifu.pdfIn PDF document text
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a814681c4f8---milafakeli.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/ro35luhn4uosvkj7ho1oakvjp2/96143258942.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=kidde+fire+alarm+instruction+manualPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c2cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2CD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000dae4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAE4	10728 bytes
SHA-256: `4c156179f020ff87349afbc34a1e72e80f14909f6476d4ad4b6214438b5757b4`
`font_02_sfnt_off0000f381.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF381	18260 bytes
SHA-256: `1dce802d31eaad2af07ed92db09e55f510a94ffbdc0c1d2e1e69ad4416012921`
`font_03_sfnt_off00010eed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EED	16884 bytes
SHA-256: `d2b0b8720038d519c382f155f733d671335ceffd138521df86ce7c2d2c5c465b`

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