Malicious PDF — malware analysis report

Static analysis result for SHA-256 00edc6c827ecbfc4…

MALICIOUS

PDF

100.6 KB Created: 2021-06-29 11:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 30644a75127bae4fa51f9edb32188182 SHA-1: d78ab24982590d25d52c445106e1322a9d6d8c44 SHA-256: 00edc6c827ecbfc4481c782bfedb87ba99868839a26eb7e71b2d9dd51a9443ba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to numerous URLs, many hosted on compromised WordPress sites or disposable domains, suggesting an attempt to distribute malicious content or conduct phishing. The document body is heavily obfuscated and unreadable, providing no further context on its specific intent beyond the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

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://angelcabrera.com/FCKfiles/file/14577311902.pdf
    • https://floridainvestment.cz/files/file/88975496491.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160743d7662f97---35065543824.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1768c7758---xiwagafe.pdf
    • https://electrabicycles.pl/app/webroot/uploads/file/16243642656674.pdf
    • http://kaowei.tw/image/files/20210528_101204.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608181ac9429d---81123375551.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608519ca81396---rizewozosiragakomokejorej.pdf
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/4ff46687622a75105a8a18e26ff0277b/dapafa.pdf
    • https://anmimar.com/royal/userfiles/file/22604919066.pdf
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbd5ae335b---gukowasubuturimow.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06cb494434---setazuk.pdf
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/rrbm1ihnicelmlhbn613a3s6u6/47740455710.pdf
    • http://baigeleather.com/userfiles/file/kamobawigimaxodir.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/464cce11fce6dd20090b5bb310c14c01/zamibesozilirax.pdf
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a58648af48c---99986090325.pdf
    • http://wagnerpc.com/userfiles/files/rukosalurusejimanut.pdf
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/ef392a9f7024f8aac290f0132e42f57f/litanibisavipuxibafonawo.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/31d9d7a6c11ba3f3fd90f8795c412113/zasoxijekurutolulesula.pdf
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/ae314a0c8c8d17ecc6b2e70a34539383/xodasuxozalevipuro.pdf
    • http://whatdwellswithin.com/file/femejudo.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/5b2d48026295a0b5c7ffd77046c15745/83441556096.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//34292014070.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160976cc84b207---17087059638.pdf
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/d084ff3c5070716bbfc45f6e197f11ff/fajawovag.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=country+code+977+981
    • 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_off00012864.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12864 16792 bytes
font_01_sfnt_off0001407b.bin
ed1accf673f48e684b021b098bbc791433d995c510507155ce887d218766b3f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1407B 10620 bytes
font_02_sfnt_off00015916.bin
a7fa228d9d492911d5cad291bd31b019b8838fc4b8dd7322e9e4f4500277cd64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15916 16884 bytes

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