Malicious PDF — malware analysis report

Static analysis result for SHA-256 762474063672a0f6…

MALICIOUS

PDF

80.5 KB Created: 2021-06-26 01:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 14e8c7a17f80947da8f53fe945c15f8e SHA-1: d925e2311a0476bc4c47bcc879f5ddbf3c8d50ea SHA-256: 762474063672a0f64cb550c4b5d4726706e0728076ae4cbbe7712eebe90e842a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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.
  • 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://messianic.live/wp-content/plugins/super-forms/uploads/php/files/93a967db2b66ffe2232ccf139e5ed6cd/karososokezutuloxu.pdf
    • http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/pukekanumumutapeg.pdf
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/dfe9befe498df88f4d0ddd48c6e06468/23977674823.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f29363617e---teditavedumuwirebujogaxud.pdf
    • http://scro.ru/pic/file/97863989758.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608f39a27e0f3---zigajulefawomaf.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/272383cd36ac8f72d0438a8498c29497/kuvefajaguvafe.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/3a0545d9a5d5009064653c339fc82ccf/54770462071.pdf
    • https://emilline.dk/ckfinder/userfiles/files/10241595700.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16087742a093d4---sodomaxasixulimesexezalav.pdf
    • https://anmoul.com/userfiles/file/mosijijoxegojosabifamavu.pdf
    • https://tlproduct.com/userfiles/file/90133166855.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160718b008983f---soritajidaluxoxubif.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b20441f421b---nefotasozipovuboku.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b31037868c7---fovoreb.pdf
    • http://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/32090514063.pdf
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/e6e4210ffeaa16fc8263d0cc2ffa7448/81920319277.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085aaa4a1543---89675329813.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c087db61b215bed60afe73b5a129f27a/71332893898.pdf
    • https://dm288.com/slicice/file/18544519925.pdf
    • http://exosportsante.fr/ckfinder/userfiles/files/wosegivunajunifobupi.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b0cbdbdc4---tatakolozivapopu.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a017515f142---8341898254.pdf
    • http://saltokisport.com/uploads/files/bogitidudigoxo.pdf
    • http://casier-a-bouteilles.fr/file/xeravikajukifonuka.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=simple+past+tense+listening+exercises
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d499.bin
2610448184bbf8a25a5b92106e1d91f4665ce99eae622312254b189a480e4a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD499 17184 bytes
font_01_sfnt_off00010198.bin
996f671d59ad7bbd84b7d3a9bb017dc0a8c82aeda56462a8b69eeb21a96c28b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10198 10776 bytes
font_02_sfnt_off00011a63.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A63 16792 bytes

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