PDF malware analysis — malicious · aa80742c09b5b3f9

MALICIOUS

PDF

422.4 KB Created: 2022-01-12 00:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: 2e4255baf1216a5075349877b97101a2 SHA-1: adf36f83a015bbb10634f314929302e44f0e1028 SHA-256: aa80742c09b5b3f95078a13ff19897aeaa9d4fd89822c60e948f5823f9fcaea4

174 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and multiple external URIs, including one pointing to a compromised WordPress upload directory. The high-confidence ML and ClamAV detections, along with the PDF_SEO_UTM_REDIRECTOR_LINK heuristic, indicate a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the download or execution of a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.7264

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://coretry.ru/uplcv?utm_term=archeozoic+era+life+forms PDF link annotation
- http://panelko.hu/files/files/18389383100.pdfIn PDF document text
- http://carscaso.com/js/upload/files/20241695854.pdfIn PDF document text
- https://candica.pl/ckfinder/userfiles/files/17267319707.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/31708728460.pdfIn PDF document text
- http://shrlie.com/upload_fck/file/2021-10-21/20211021091236838275.pdfIn PDF document text
- http://xn--80aguejfegacgj0ad.xn--p1ai/pict/file/xusapetegoru.pdfIn PDF document text
- https://braveathlete.net/geektic/files/sidoxoruruxugemovezefi.pdfIn PDF document text
- http://spineportal.de/files/file/wibevobalaniremumifu.pdfIn PDF document text
- http://jingluo.net/uploadfiles/files/sevojisaganokil.pdfIn PDF document text
- https://sierrainstruments.cn/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202111/file/91479171496.pdfIn PDF document text
- http://radio-salsa.fr/php/rs/filesupload/file/95696494065.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161b4dc6c571c4---labukisinatujazuviziva.pdfIn PDF document text
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/09cdd522062ce7da5ad9757cae712452/11214677380.pdfIn PDF document text
- http://lmnn.ru/userfiles/file/luwapoxurodefoxutavopo.pdfIn PDF document text
- http://orvositudasbazis.eu/images/upload/file/476241341.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/a35e104d0300cc545bf9856845c2cc55/78204211909.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_off00062f25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62F25	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`
`font_01_sfnt_off000645c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x645C4	17364 bytes
SHA-256: `aeac032a2bc782a162068725f5ecafe6b5f6e7917d35d1198747fa1c0886141f`
`font_02_sfnt_off00067348.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67348	10440 bytes
SHA-256: `8717fa922b7d4d8d2c5b9648559642fdc2642c2b46b278fa0cefd40243f20a94`

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