PDF malware analysis — malicious · 8ae14d378597a7ea

MALICIOUS

PDF

70.8 KB Created: 2021-09-16 03:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 01b51224ce88d6ffb5da8c1e768d86f1 SHA-1: 2170593dad7e02e9d1e339d57f34188fbb7912f0 SHA-256: 8ae14d378597a7ea2f110908f4171c6a0e4fe1b5ee4e3dc9cfb8a222e55026da

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classification and ClamAV detection. It contains numerous embedded URLs, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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=7+commandments+of+animalism PDF link annotation
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161346e3407ea1---xunugajuzuja.pdfIn PDF document text
- https://avukatwebsitesi.trakyasoft.com/upload/files/66437829161.pdfIn PDF document text
- http://artvideo74.ru/upfiles/files/8133482916.pdfIn PDF document text
- http://tienhasteel.com/app/webroot/upload/files/2280839247.pdfIn PDF document text
- http://youandisagenix.com/ckfinder/userfiles/files/5615347627.pdfIn PDF document text
- http://studiolorenzoni.eu/userfiles/files/vimobatavajenanema.pdfIn PDF document text
- http://soeurs-scjboran.fr/soeurs/upload/files/badokavununugepubu.pdfIn PDF document text
- http://lagrupacio.cat/file/femizaxawerejezafasoda.pdfIn PDF document text
- http://hgbs.de/userfiles/file/24038288014.pdfIn PDF document text
- http://teamtrinity.net/trinitya/file/34918396390.pdfIn PDF document text
- https://nstoplana.rs/ckfinder/userfiles/files/78646855510.pdfIn PDF document text
- https://shreenatharcade.com/userfiles/file/87951504206.pdfIn PDF document text
- https://preprodpcb.com/userfiles/files/38089740501.pdfIn PDF document text
- http://studiovalentini.eu/userfiles/files/68543190171.pdfIn PDF document text
- http://e-park.es/img/uploads/files/lojufenefisajibiladubem.pdfIn PDF document text
- http://rotarybrescello.it/userfiles/files/paloxaxixiwelodiva.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/71685298978.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613264ab6982e---92895793540.pdfIn PDF document text
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f966b793bf---64408182544.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132461543894---64134424604.pdfIn PDF document text
- http://xn--80aadcnaeutgftohcogh8i8dsc.xn--p1ai/pict/file/bigarakuwikabolaw.pdfIn PDF document text
- http://lse.hu/userfiles/file/fawipudemotapexibuso.pdfIn PDF document text
- http://isleford.com/filespath/files/20210908030853.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/xipavejusezalujoku.pdfIn PDF document text
- https://dunakanyarfesto.hu/ckfinder/userfiles/files/rajito.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_off0000b6e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB6E4	15372 bytes
SHA-256: `b29b86bd05b8144794a05990dccf814e4d201f294735a7883fbe283b63a6b988`
`font_01_sfnt_off0000de01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE01	10488 bytes
SHA-256: `a434378685e8c7a847ab16f59eebbe09476ed4a9664731b9f8c4cbac3afe0fdf`
`font_02_sfnt_off0000f5dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5DC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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