Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae034b28b100f77…

MALICIOUS

PDF

97.3 KB Created: 2021-07-16 21:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 9e2d10ee33101854c8e989971ed46eb1 SHA-1: 2228176a864f3fb6bec1fbc63baad79c5720e8eb SHA-256: 3ae034b28b100f77c94e695c7e82b78dd75bd2bd104ae4ffc0abdc7afacf9cd6
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it uses an urgency lure. While no scripts were directly extracted, the nature of the links and the ML detection point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160828a558736f---tudixikexapomexemabod.pdf In PDF document text
    • http://coming-c.com/userfiles/file/24034421278.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/72875968820.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/7a36db3e0db41c7785fe42fbd80bb586/64403557232.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/83676198915.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd5e6ce85f---wuwenavibezejawurelexof.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160af6a10cc735---dutetexedowuri.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9c7a32bee---kalizixutibadopej.pdfIn PDF document text
    • http://premium-h.info/files/files/27646165279.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081baf11aab7---sigun.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/lipegasijiwutigudo.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/2e30061475ff4734295a2dbc3717dfa6/90092470235.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/5o4mp19g7btfjhshdrv2uj9cv3/7050427551.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d99d1656bb---pusuge.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/3i3u77bd2dghvb24v7ertj2go3/67228945319.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/d9af4bfad44cf73555454f485792b2dc/bikokokubogozerinegi.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2c0fb5872---ginolojufuzizafu.pdfIn PDF document text
    • http://gt-outillages.fr/ressource/site-image/files/xosalekewuguwotufanof.pdfIn PDF document text
    • http://xpressup.com/userfiles/file/61153351637.pdfIn PDF document text
    • https://webmenuplus.com/images/file/27858761925.pdfIn PDF document text
    • https://affordans.com/ckfinder/userfiles/files/mubekijobanuwuvoni.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/021419446506.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16070bcf86fb8c---14675181565.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//2165042088.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=payment+schedule+template+pdfPDF 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_off0001186f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1186F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13081 17920 bytes
SHA-256: 7ad0fcefee71ea508c761cd254dba8054f4bb8c2e136f4de8aafcf41d0717a54
font_02_sfnt_off00015f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F62 10788 bytes
SHA-256: 34ec514e1894e56ffe4fce74588379ee60bd957223fce89c87d6ab6eb40a2b6e

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