Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e886c11fbab530…

MALICIOUS

PDF

70.0 KB Created: 2021-09-01 06:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 79148913c7b19110b694c8aafd8a9bac SHA-1: a08b5583de49d7af3d468d8fbcf27cc509d38207 SHA-256: d0e886c11fbab53020108e9ccf971a7f7e9bd05af4c6d513e757b23364be1e8c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier. It employs a common phishing tactic by presenting itself as an image-only lure, hiding a clickable link. The numerous embedded URLs point to various compromised websites and disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing pages. The document's structure and the nature of the URLs strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://garglob.ru/uplcv?utm_term=anointed+solomon+king PDF link annotation
    • https://dynasty888.com/image/files/20210529_033346.pdfIn PDF document text
    • http://autoachtercamper.nl/userfiles/file/kutozut.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/supubo.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baf4200fa64---kunisikugu.pdfIn PDF document text
    • https://tbsva.org/Upload/files/20210831164301.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/bijomebez.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/poxuxigamomofobejebibup.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/zovojebowudit.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/a3c07ad1805a508ccacd32693f5f914a/84711223780.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090344891d0c---vigipekexajesinajedodegu.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc5001868fc---69542628483.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/uqrbbq9jmfhh9j7ogf5n15rguc/11106117172.pdfIn PDF document text
    • http://southfieldhigh1973.com/clients/2/27/27a5067865c8334ad4a5a1fd7642c928/File/44152404457.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/73306370996.pdfIn PDF document text
    • https://corpus.bg/files/fck/file/72101823874.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091be7c93432---76202586921.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/90771229891.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/sojusumub.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/g5gqmk5cbb5jm9d0ajhfkagqbo/zajegobobun.pdfIn PDF document text
    • https://iva-vietnam.com/userfiles/file/11346710269.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/6744327955.pdfIn PDF document text
    • https://visualmotion.nl/uploads/file/dajerona.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/60613045966.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c53e845f9e0---pamamizuvawapamumipexawiv.pdfIn PDF document text
    • 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_off0000b7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DC 10404 bytes
SHA-256: 02cd4fb433ed59c8488aabe476e2cad686dd4e7e363a95ab671b23b26285eca7
font_01_sfnt_off0000cf2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2F 14048 bytes
SHA-256: b38347e85143d190e89dd8f25b233fd4939ed6160eb4a55785cb61e79c4c1c24
font_02_sfnt_off0000f207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF207 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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