Malicious PDF — malware analysis report

Static analysis result for SHA-256 18980a73732afcf6…

MALICIOUS

PDF

89.5 KB Created: 2021-06-25 21:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c9993fe09ccb0ef4345ead7be22dfb45 SHA-1: 48f88f9efd87a0c1b8b12014ee750f98a95bca3d SHA-256: 18980a73732afcf689c5a598e4f0ae6bac4d2390206df97035740f84b5819de4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs pointing to compromised websites. These links are likely intended to lure users into phishing scams or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://ucity68.com/clients/e/ea/ea220da86df44fb0ae3b7c8e8295ccc1/File/9499308663.pdf
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/hlrf6bi0og8hvq1reccu6ejs95/84762372169.pdf
    • http://usarsenal.it/userfiles/files/bigisuzaboxepubexupado.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608879ae55b40---13102214142.pdf
    • http://www.alex-vasilkov.ru/images/wisdom/file/96362708008.pdf
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16090f19439230---38707370085.pdf
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/6dta5b2iiitbldbnqa1lp3r4rm/83939747658.pdf
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/099nsfjd5j02isc38he4gfrv0k/filunabokiritavumikuvebaw.pdf
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/4f2d8a5bf8769d6a6328c14f2bd4f0ea/8635207959.pdf
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/e89e5f14caaf593896aa038979ee2bf5/tivawa.pdf
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160875f290a10b---zopezonidovokilalonikigow.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093a573ba7f3---zalorefa.pdf
    • http://orderkiwicafe.com/uploads/files/pomasa.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607719fa78558---pareduwinufibaful.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9d9b7ac6c---jojamaripaxijiv.pdf
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/fcd6f49cf9aebe9788c20fe443e73cc2/81128289957.pdf
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/90bea3d0ed1c9bc23cb5b9ee831a489a/befukegegagunoda.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/d321002f320f0813cc342c427f6fbcf7/xegibajiroxivikomisuza.pdf
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/kpqcn1qp5gohvvnm76eopkd8g2/46543589473.pdf
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8325690572---25137608995.pdf
    • http://immobilieninvestors.eu/userfiles/file/fapotapefuponuvakisavuxit.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/6f4bed915d80d186e3522def6746b330/paxagazijoguzixironumi.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1d1672f11---lumegiluwupifa.pdf
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/0ed76c1f36dfcfdc18ed930212a71fbd/zamajumuvorewuxavateves.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=top+n64+emulator+for+android
    • 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_off0000f969.bin
3ea3af0a533ca2e1bc62279605da27207a83102090f66be9be421b6d7ba41469		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF969 17764 bytes
font_01_sfnt_off000127fb.bin
360c13a192b8bb4fda9c07a71b3d48f2eb2d05dfae789c0bd5cac0dd4bd5d724		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127FB 10800 bytes
font_02_sfnt_off000140e2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140E2 16792 bytes

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