PDF malware analysis — malicious · 08de49f17fe2c463

MALICIOUS

PDF

87.5 KB Created: 2021-07-30 09:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: d8f49f96fb7956b017436c7ba262dc18 SHA-1: 2374f15709d16dca18ad7d573f6acb7db6bb8e75 SHA-256: 08de49f17fe2c46355ba4373c3b3fce885aa13745cc4a545a9ab66763b2508e0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to direct users to malicious sites, likely for phishing or other malicious activities.

Machine Learning

Nyx PDF Classifier malicious score 0.9883

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://albawadiroad.com/userfiles/files/xuwojamagomemeba.pdf In PDF document text
- https://pima-alarms.rs/slicice/file/kalurojovudaxabigejaxosaf.pdfIn PDF document text
- http://speakingaboutnetworking.com/ckfinder/userfiles/files/mesuwevokoxuwazi.pdfIn PDF document text
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7340b93481---dalotikirasuzekalodinajes.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/d694fa1af081cc0527ac9e9d1787fca9/9906269408.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a60d463a16---2460107178.pdfIn PDF document text
- https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/k2l3sr6enqa30l9mdj6o1dv434/fijuxifujimi.pdfIn PDF document text
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b37d3ac2665---6071411963.pdfIn PDF document text
- https://teyadegitimvideo.com/calisma2/files/uploads/vidumudogalusilopozemesi.pdfIn PDF document text
- http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/00cb94496d9c6b81cdb105e35a43cf19/94070150894.pdfIn PDF document text
- http://alexdisinfestazioni.com/userfiles/files/gapotonedovelikudanazivax.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/762ffa052402c28013fafcb30fece44f/16513233978.pdfIn PDF document text
- https://cmoretv.com/userfiles/rurajodarebolar.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608efd27d05b4---63237180411.pdfIn PDF document text
- http://jrpst.pl/userfiles/file/97168438003.pdfIn PDF document text
- http://kolaykanal.com/userfiles/files/koxed.pdfIn PDF document text
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bc797f1e2fd---wovagemivupavigata.pdfIn PDF document text
- https://rajatotogroup3.com/contents//files/71941995278.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16074b95265033---wogolowewadiwu.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/38032e9185e0e8c9fadcf5e993c8ffd7/potobima.pdfIn PDF document text
- http://axiomestates.com/userfiles/file/sirafubefixix.pdfIn PDF document text
- http://modern-pro.ru/files/file/soxabazotutipo.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160f4cbfe6ba4f---37942189506.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a6dda7e3d---55580306467.pdfIn PDF document text
- http://csptech.net/admin/userfiles/file/29842132842.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bebd3d40136---siwex.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=advanced+english+reading+comprehension+test+with+answers+pdfPDF 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_off0000f0ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0BA	16724 bytes
SHA-256: `f08c231bf25379a498a748fc05027db841fe08f274f5b6978806b00943777900`
`font_01_sfnt_off00011c41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C41	11200 bytes
SHA-256: `a2f84a25c4856a8d7c7005156613dbc41ed9153fd5325aee41df7fc1637d397f`
`font_02_sfnt_off00013630.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13630	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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