Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2c7fad625f48d6…

MALICIOUS

PDF

73.3 KB Created: 2021-08-15 07:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: f100892c5b070157e134a4c2e18f4835 SHA-1: 33168e41fc2519b8f01d6cfec67e9723960cb42d SHA-256: 0f2c7fad625f48d6482ce9cc515c32086a58a86d731a608fe692cb25e5b21ba0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a significant number of embedded URLs, many of which point to compromised CMS uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a phishing lure or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://pileshoppen.dk/userfiles/file/giwebebufakubuvavosebosa.pdf In PDF document text
    • http://abovomedia.hu/_user/file/mavoviser.pdfIn PDF document text
    • http://aquatrustfina.com/userfiles/file/xadisetidigibugorase.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/69fd01784bbacae468c5764d91179465/gumidetabil.pdfIn PDF document text
    • http://tachikawa-derma.biz/ckfinder/userfiles/files/nubonoxobefuwanobagovafa.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608e84f24696b---66729966100.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/tefovebupaget.pdfIn PDF document text
    • http://malverne69.com/clients/a/a7/a743c233813d1a1dbf5c38c484d85cdc/File/fovasepolebotoj.pdfIn PDF document text
    • http://abwessex.com/uploads/files/vuzojokitazuduvakekiji.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/50c18b1db7669dcb1b807e93eb2258fb/dupoxaxomufa.pdfIn PDF document text
    • https://onwater.my/uploads/file/nuwategugutawokus.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/hpks9t7aponh3lvkuhv3to6omj/99867978905.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/1af4f2f60eed0021b4cf71cd06b00bfc/37178434651.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/7571458d07d3ba83d9540a216a14d09d/39287244218.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/raretagezufusetitakuna.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ad205a1e780---24698304050.pdfIn PDF document text
    • http://hillandcunnreunion.com/clients/864369/File/20438353724.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/luludemevotekobotewezib.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/33739591361.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607384aaf357d---bizidaxazedowixozifalugaw.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/95d327863031b0c8cb1a8f9ff3215f95/28636184013.pdfIn PDF document text
    • https://www.natursany.com//ckfinder/userfiles/files/43594039439.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/gafewese.pdfIn PDF document text
    • http://ehhs1969.com/clients/6/67/67a0fa02f482ea8575b7cec7429e43a8/File/girepuneguza.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/47942632823.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=do+one+touch+test+strips+expirePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E3 15788 bytes
SHA-256: 8a0376c540174d6ed1354c427ec078e732834d8cc5013488c4ad32cf91431629
font_02_sfnt_off0000ff62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF62 10464 bytes
SHA-256: 7897ff60971fda47c6c73a88ab9bf961d93176d32e0e7a1c35d066e7ab72ce32

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