PDF malware analysis — malicious · 458045feb3885e71

MALICIOUS

PDF

88.7 KB Created: 2021-07-14 04:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: c843759e7a3fb4456250cc7952ee3134 SHA-1: 1c6625438eb8a1703253ed37fcd874407fc3a29a SHA-256: 458045feb3885e7168e3ff7d22c7381febf0a6606d252c090f3bee1ff72a2012

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute malware. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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 http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160898f17a5cc4---wupokuvaxoset.pdf In PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/f7692667580ec12b744e4fef4384470f/mijejojalupokosop.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160d463467cb3d---vagaduwu.pdfIn PDF document text
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/ea64d49c50efca9aaccf0afb4976314c/3003909252.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/b94ca2ddba83e679da25dea7089b1d9b/ruletu.pdfIn PDF document text
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/faltp3e0ma693qo3sjkh8eklq6/30276869877.pdfIn PDF document text
- https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/iaotfkd5l442i9npkhc2cbn5j3/1556069938.pdfIn PDF document text
- https://larustt.com/upload/ckfinder/files/31316031109.pdfIn PDF document text
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ee8579589---kovuruzisikovivumulewa.pdfIn PDF document text
- http://akifkasaboglu.com/esatfisek/images_upload/files/70086174058.pdfIn PDF document text
- https://nazragame.com/calisma2/files/uploads/zedijupamav.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/n2l8bnn0chvu850eblfbgqs8n9/43779553402.pdfIn PDF document text
- http://alrabbancapital.com/file/files/56194308103.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/a4eqht17f6ciqjpa33i83p637h/49676042355.pdfIn PDF document text
- https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/rerawagusonu.pdfIn PDF document text
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a705c6be0aa---xemezimorolivilokobegop.pdfIn PDF document text
- http://taxilitomerice.cz/ckfinder/userfiles/files/sadijef.pdfIn PDF document text
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607effe6c121d---kamafeneramu.pdfIn PDF document text
- http://adria-ex.com/images/blog//file/basigesovuramonakazika.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcef3a4b7d---64862551959.pdfIn PDF document text
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/uiosl5kg02ubs2p3or35ut3647/71041519515.pdfIn PDF document text
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e82eeb8596---51080256340.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/f1hripaaem5iu6f4m5ern8g3m2/buvipokuwubu.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/68d9d4a377499038e7ff4214c9ea675c/80055976671.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=download+i+am+number+4+full+moviePDF 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_off0000f39f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF39F	19224 bytes
SHA-256: `966e8504d3670cbbde36e1d9bef936a3a5f2411b4a1c837ccdf81ae2bb40f78a`
`font_01_sfnt_off000124b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124B8	10720 bytes
SHA-256: `7a20289baa65608ceff0d3bd07e8a11189b33f228ef6c66a74bd60d2c0a215d9`
`font_02_sfnt_off00013d5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13D5D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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