Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e12d9ac4d4122d…

MALICIOUS

PDF

73.8 KB Created: 2021-06-26 13:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 293898c761916cbde41633d7aba34f90 SHA-1: 1b65282b25bad81cb8f4accd9151a9233f36393c SHA-256: 80e12d9ac4d4122da4fb03a71125f1b8ce3da7f47c0bc357983086f82c14495c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://akcjonariusz.com/UserFiles/file/povij.pdf
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/47185244180.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b26b7dd59---livevuxudaxal.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2e9184060---1571826248.pdf
    • http://www.emailposte.com/pictures/puboxumivusowubujex.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b94ccf74629---fezugetadeveb.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5683251bb5---44472844496.pdf
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a598d886060---38047192652.pdf
    • http://gialtour.it/themes/userfiles//files/zejokuxuwufefademozudiwa.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c9dfa308b56---kelesit.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/uee1b5us961necsne117o19967/waxipotapujasowumome.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c03ecc5ecca---gexulusexa.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/d145b058f4ed0cd6e0ca9fc73899efcc/fojugufopepumoxotov.pdf
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/tot6ndp7th055rb5pf2h0jst19/16072447504.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8d2474313---69463664605.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160851419107ee---tijijusitupajazej.pdf
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094958c9dbf1---lufiborufozizadolulo.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160919a0658c69---fubebavajadewubojejova.pdf
    • http://capitolmetrophysicaltherapy.com/userfiles/file/16383280576.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609155361ab34---fadebawinapifojimuj.pdf
    • http://vidol.nl/userfiles/file/tizifuzefadutoxetunav.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=you+are+the+air+i+breathe+by+jerry+k
    • 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_off0000bc96.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC96 16792 bytes
font_01_sfnt_off0000d4ad.bin
12f30aa7df769980fa798b58ad77428872ed1003cb6f0d9321c5090ba116cec2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AD 10444 bytes
font_02_sfnt_off0000ec7e.bin
f6953115e519ed97bb7c09350e90830fb377eb6a4d3a15dcb1b98d97cd025128
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 16776 bytes