Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7279ef32d8e339…

MALICIOUS

PDF

95.5 KB Created: 2021-07-08 13:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b93ddf33acc1a0b7a114001a969b1561 SHA-1: 4dcf9dd6153778b3ab7cafbc11e24c4b3ac3932b SHA-256: 0d7279ef32d8e339eaf5d49c38a16d0306222305d2c52474aa789f59cd10804f
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 critical ClamAV detection and an ML classifier. It functions as a link farm, directing users to numerous external websites, many of which are hosted on compromised CMS uploads or disposable domains. The primary purpose appears to be to lure users to these sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://oklogistic.lv/upload/file/xomukopomizuge.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bae521601c1---zefosapozit.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/o3ujs2uc36e4eu6ka2d9n0rrdd/51663512473.pdf
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/mra8c9h0l42r3siaeerdns1qph/gatiloges.pdf
    • https://bushregenerators.info/userfiles/files/raxafatunukobajafateb.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/f210p8epn7mq7pnd065rpmn0t7/guwuwukedikelig.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4faa0ed09b---sowuluxebipezaxido.pdf
    • http://simpli.ie/survey/userfiles/files/28173166400.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/98c106acf61966ebd444bf3a9941c4da/supojabavuxoveroregu.pdf
    • https://ppuhperspektywa.pl/files/edytor/file/widikumipokipeweva.pdf
    • https://acryl-bg.com/userfiles/file/40161183441.pdf
    • https://seripin.com/calisma2/files/uploads/138217252.pdf
    • http://hilimall.ae/uploads/files/6860217828.pdf
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095973b5f815---tisomesazajupotor.pdf
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/03cf775f8e626e5c9f871b14a9e25bd9/73144539094.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/mae83j1g05uhku2oj726cr7t24/bubunitapapakiv.pdf
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/2v09jbbqkddsqlm4jdo2ed7hjm/60317620936.pdf
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b440353451---31455023757.pdf
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1db019acf---29502336151.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0453ba0b9---68039361023.pdf
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/vsatutvmeg5jlqg2mk9cghda21/64268882529.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acad0900d50---2387022656.pdf
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/23fa83d5b394535664988d1cab259dbe/32782471428.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=mother+nature+capitalized
    • 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_off0000f4fd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FD 16792 bytes
font_01_sfnt_off00010d14.bin
283f3a08b8174a7c759e8954e48d0b4d5d1545e1f19c4d0fcea25baf43ae15f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D14 10596 bytes
font_02_sfnt_off00012534.bin
29fc1824ea08c42534dc52b9e8e140cec7b785467a1517984bf0818e657c051a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12534 19716 bytes
font_03_sfnt_off000158c9.bin
bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158C9 16252 bytes

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