Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ae1d1c9ba77aee…

MALICIOUS

PDF

85.8 KB Created: 2021-07-03 07:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 39d46232d483513d2f0994fd86fac786 SHA-1: 3d69925cdcb649820250abd55787951bc1b72d6c SHA-256: e3ae1d1c9ba77aee49d97ce1a27b725858c48178ec27acca463fdd8c938e8bde
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS upload directories, suggesting it is used to distribute further malware or conduct phishing attacks. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs further support the link farm and potential SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3b006fc69---weduzevi.pdf
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/2180e8a1e8756d847347e5b97d8da8b6/vepogiwenerezi.pdf
    • https://cuisinescartier.ca/upload/editor/file/nufobativajipududupujaw.pdf
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078c67e66938---megivoj.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607098854e0a3---govemusetefevumawis.pdf
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/d8a905e2881c04f08427e99983349136/tutun.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/97e78082197c32b7faf26267ed328b3c/56546110950.pdf
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/gf1duumfrafpef3rqm01mc3saj/tuwumadiw.pdf
    • http://afgventuregroup.com/cfiles/file/17220329430.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160becfa6654db---18595253641.pdf
    • https://aonetreks.com/uploads/file/puligutomepazapuridefo.pdf
    • http://valkexclusief.reviews/app/webroot/files/userfiles/files/83413040351.pdf
    • http://krzysztofmalec.pl/gfx/fck/file/nidedefefeferepelibowilu.pdf
    • https://prtl.pl/userfiles/file/sutim.pdf
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/4c5d39bf7dcfb734c6f1d22dd19347c4/67847084506.pdf
    • http://nuraski.pl/wsg/userfiles/51639330809.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160c8580c6a333---morefegubekaxedura.pdf
    • https://textosolutionslinguistiques.ca/upload/editor/file/5765757673.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077400fadea6---3528597972.pdf
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/9d8a10dd29e6729aff8f4281c3688da2/11964171986.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f3c7b234e684ee16d98a3a29fc10e0da/60728161829.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d45545a8ce7---43958132977.pdf
    • http://yjccnc.com/upload/files/10858356339.pdf
    • https://valve-toho.com/userfiles/file/nazezugemuken.pdf
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb52c734a6---xupekedulasidapebala.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160935d31dc71c---jobuwisaxofakedofesid.pdf
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/r6178b8mjri1ug78ee1ilu8a72/wogikalapolorobe.pdf
    • https://superpart.com/files/digabokave.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=architectural+thesis+sample+pdf+philippines
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edaa.bin
1ae7cb126e5c2535cb8c7444d3d1701865159a4f3e8c270369ae2d23d6526d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAA 16460 bytes
font_01_sfnt_off0001184f.bin
fccba7c0f2ad14e7e2b50e73a21b4a80d2e68e5cd15f359ab2d5e79c22456fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1184F 10848 bytes
font_02_sfnt_off00013129.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13129 16792 bytes

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