PDF malware analysis — malicious · 0742ae64a3efe818

MALICIOUS

PDF

84.9 KB Created: 2021-09-20 22:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: decbd5fbcd647ccfcb0239fcba7d421a SHA-1: 410270d94972def2247643960139d48b826986b1 SHA-256: 0742ae64a3efe8180eba2662eee7742fb90de0b207c6dbee6ef5c6e4a15dcad3

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting, likely to distribute malicious content or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing and malware delivery techniques.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 http://www.workbythai.com/admin/assets/images/96498684494.pdf In PDF document text
- http://bulk-supplies.com/userfiles/files/gozujelazobajuboda.pdfIn PDF document text
- http://location-venise.com/italie_documents/files/37133162860.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/e91138d5a37d5d84bda9d1f3cf0830d7/8977373632.pdfIn PDF document text
- http://rvhifi.cz/files/file/jarexovidukuz.pdfIn PDF document text
- https://mimpishio.com/contents/files/61527656114.pdfIn PDF document text
- https://semangkamerah.com/contents/files/nipobojojomaditunurira.pdfIn PDF document text
- https://takitech.hu/userfiles/file/87462127610.pdfIn PDF document text
- http://sanchariglobal.com/userfiles/file/64738206485.pdfIn PDF document text
- http://alajwakh.com/uploaded_files/userfiles/files/4610096872.pdfIn PDF document text
- http://astorandblack.net/emailer/userfiles/file/67467066647.pdfIn PDF document text
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/57a2d83be72d55461eb98ef72bf9815a/boborezaruvixogaxotedemeb.pdfIn PDF document text
- http://chinahk-ip.com/chinahk_ip/html/files/editor/file/toxugojonenixi.pdfIn PDF document text
- http://palestraarkadia.it/userfiles/files/31781891711.pdfIn PDF document text
- http://goldenagegroup.vip/userfiles/file/60316007664.pdfIn PDF document text
- http://studiotecnicoprato.eu/userfiles/files/xegepun.pdfIn PDF document text
- http://s2ipower.com/survey/userfiles/files/polusalojagufidana.pdfIn PDF document text
- http://edisonprivateschoolbeta.com/cote_dor_import/admin/ckfinder/userfiles/files/wixifodorokuke.pdfIn PDF document text
- https://cochleartudaskozpont.hu/files/69984489540.pdfIn PDF document text
- http://apexnepaltravel.com/userfiles/file/xisezififawonavug.pdfIn PDF document text
- http://studioguatta.it/userfiles/files/kenupit.pdfIn PDF document text
- http://mrtowing.ca/Lawyers/userfiles/file/vumepavudebus.pdfIn PDF document text
- http://gddfboiler.com/uploads/files/zinemufog.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=food+fighter+clicker+iosPDF 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_off0000d95d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD95D	2004 bytes
SHA-256: `89cd01d6aaa529676cd8ce2c7b68a34e1a55fb5e8efdc7dc98a3bbd81b1f0407`
`font_01_sfnt_off0000e27b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE27B	10560 bytes
SHA-256: `26137f9f193bc849c1851d1d1347c4aba9dbb1c8f1cf9cd36e34cf35bfebd813`
`font_02_sfnt_off0000fa6e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA6E	18668 bytes
SHA-256: `cc90b050fbf51e34c2a5f3cc1d645e3676005df1ca8975cd092369579833849b`
`font_03_sfnt_off00012b79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B79	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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