Malicious PDF — malware analysis report

Static analysis result for SHA-256 807ea6e5ba0b56fc…

MALICIOUS

PDF

78.6 KB Created: 2021-07-18 22:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 15d7db2ad7eb709d3ba78247b3a5d6ab SHA-1: a7e6df568f64645c982d131112e35565dad8f280 SHA-256: 807ea6e5ba0b56fc8c05008339cf921a39a432cdc36d6acbe0502df2cb513150
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs hosted on compromised CMS platforms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the structure and embedded URLs point towards a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/f7e1a8aa61296eec665a6a0fd3231346/xonakiwa.pdf In PDF document text
    • http://www.vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/42999626767.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/cd19da7384768c607ee01b2ed6ab58b5/90915410512.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6a6ee9590---4546318728.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/85955921864.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/91728312714.pdfIn PDF document text
    • http://koryosushi.com/uploads/files/36444774483.pdfIn PDF document text
    • https://latework.cz/soubory/dovotinelibofesil.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609207d64c419---38543193810.pdfIn PDF document text
    • http://velo.hu/UserFiles//file/45270170047.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b63f0ec3ff9---83236294260.pdfIn PDF document text
    • https://doublehaircenter.com/upload/ckfinder/files/16822210903.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97ed6ea0f9---40295146322.pdfIn PDF document text
    • https://tanthueviet.vn/img_data/files/88195524445.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/8ia29i7klk2gibukkt3e5vvgg1/2300601712.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/fdfb8358b826f3f6cd9c20bde45dc8d5/22358138772.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b551c8d9b64---fenumozamoderejif.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/oh47lakja2pip2cnbe4ejcih52/benowanotunetutunogabam.pdfIn PDF document text
    • https://marmarases.com/upload/ckfinder/files/fogepixisuzugu.pdfIn PDF document text
    • https://thedestinbeachhouses.com/wp-content/plugins/super-forms/uploads/php/files/97e3ee878929bc53105b16158ac79d6f/tusatif.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/welaw.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/c79b93dd0382eed190e64b61ff299b1c/49011565502.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/91585363868.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=word+convert+picture+to+textPDF 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_off0000d204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD204 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 16640 bytes
SHA-256: 7bebc5f6aef56761a1999157bf8e3a70bfafa122aff15dcb16f87a0193a93ffe
font_02_sfnt_off00011595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11595 10392 bytes
SHA-256: be0b24b8200e7c9bce2d7eab7cdba65200da60720d6e62c3937fbe1455a6bddd

Open this report in the interactive analyzer, or submit your own file for analysis.