Malicious PDF — malware analysis report

Static analysis result for SHA-256 c860661529dd6aaf…

MALICIOUS

PDF

84.9 KB Created: 2022-05-31 09:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 260547a19cb6877a5cb10d2268d6fcb0 SHA-1: b25e32cd2405d428766fd6e68a9633bf0a35c217 SHA-256: c860661529dd6aaf97757f74864f10468202252f60c2c7d8fb95916b7b74099f
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating a phishing or malware delivery attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary URI, https://podar.co.za/YmrXLWy8?keyword=flamingo%20sheet%20cake%20ideas%20pictures%20clip%20art%20printable%20pictures, is likely part of a lure to trick the user into downloading a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • 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://podar.co.za/YmrXLWy8?keyword=flamingo%20sheet%20cake%20ideas%20pictures%20clip%20art%20printable%20pictures
    • http://pngroup.pl/ckfinder/userfiles/files/jenesukilisagu.pdf
    • http://pcccmiennam.com/media/ftp/file/82029865605.pdf
    • http://acelybio.com/upload/files/nomosulovawemimaje.pdf
    • https://razredna-nastava.net/files/bebunasonugiko.pdf
    • https://leosservices.com/userfiles/file/wagudawelutasupikokebew.pdf
    • http://www.omniasubventio.sk/admin/ckeditor/kcfinder/upload/files/denevamupawewepedalenuge.pdf
    • http://sntaviator.ru/ckfinder/userfiles/files/91990597984.pdf
    • https://intimtreningdebrecen.hu/frontend/ck/kcfinder/upload/files/dedefasixavewewev.pdf
    • https://mavuweginu.weebly.com/uploads/1/3/2/6/132681431/9856887.pdf
    • https://cambodiaangkorhomestay.com/userfiles/file/tunejunubudarejaguti.pdf
    • https://guloradupatop.weebly.com/uploads/1/4/1/4/141438732/falurule_lezekusejupo.pdf
    • http://www.mab-solutions.fr/upload/file/luvufer.pdf
    • https://rallstarawards.us/nbloom/fckuploads/file/xuginagadig.pdf
    • https://retujesa.weebly.com/uploads/1/3/4/5/134529196/7495085.pdf
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/mebopo_wikuj_fitotifoduzub.pdf
    • https://innotek.vn/uploads/news_file/guzowerotaji.pdf
    • https://rigivopamakor.weebly.com/uploads/1/3/4/8/134869382/fixotovajila.pdf
    • https://pureveruzidupuz.weebly.com/uploads/1/3/4/1/134108723/d02808579f2307f.pdf
    • http://colombonewsletter.it/admin/data/files/files/91248272556.pdf
    • http://www.halabicaguitars.com/gfx/administration/js/ckeditor/kcfinder/upload/files/92211141723.pdf
    • http://hankyunget.net/userData/board/file/runafefapevovud.pdf
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/5081215576.pdf
    • http://gsprojekt.eu/userfiles/files/lefirufudamotof.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cde1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE1 16792 bytes
font_01_sfnt_off0000e5f8.bin
8f12783a49d867a36e8a794f02a8d1a3d16150c0993ed4e90d2df4f8fa0ba89a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F8 11268 bytes
font_02_sfnt_off0000ffbc.bin
07f832973192c1edeab293fe5352b0db8775c4b4b3be80f2ed542510f5b357d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBC 18316 bytes
font_03_sfnt_off00012f18.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F18 16092 bytes

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