Malicious PDF — malware analysis report

Static analysis result for SHA-256 080ddf35d3e59732…

MALICIOUS

PDF

95.0 KB Created: 2021-06-30 19:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e19a3e24cc00db06ee6605fe5ae35b5e SHA-1: aa3a18fc2bcfe533a38db5ffb154c2eb05b5596a SHA-256: 080ddf35d3e59732864e66cc58aa60d07e885ab673b6eee90fa1fc1353b123af
164 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites. These links likely lead to further malicious content or phishing attempts, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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
  • 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.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983b7fd57fd---91955056654.pdf
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/04f76a6932cc7bce43270abf28559e9c/legogovomitunepevap.pdf
    • https://holocaustresearch.pl/nowy/photo/file/83797257994.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160aec78fcbe5a---sigebevogot.pdf
    • http://candybeauty.vn/upload/files/23716776849.pdf
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/jk0k3n6cll9je02s3mlvtk5vc6/matofibibedixevegofosivi.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c63f56ccab---76276153890.pdf
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/njk5flbg54iudhnjh5tmvvrp0k/sukikox.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7b0f1616b---fudemar.pdf
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16088c1707d7b8---70701581259.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/43b6f25672c5d99e9154f604d17fafe5/gorosutusefus.pdf
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed1174fef4---kawezafuminirawiwulida.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2303fa9ffc---rovetukagizureniz.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/eb8512909bee35684b0e553bb01298b8/ripidaworogovijiv.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8fdf94f5b3---vidolufik.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/51450c6dc0cb3f656cabffd3989d389c/46693967097.pdf
    • https://condominiovillage.com/userfiles/file/xopexajalowepuripakafenix.pdf
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/23n995mo09nd9gdtv3ajvh1eq2/38919521084.pdf
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6b835f662---36340062121.pdf
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/42b88707ff7df2c868680a0c7fa75912/vudomuvuxixadekoropigeto.pdf
    • http://adabaskimerkezi.com/upload/file/widodigone.pdf
    • http://scard.vn/app/webroot/uploads/files/pokulofafulelo.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba79a33535f---33855635934.pdf
    • https://investmentskillsgroup.com/images/userfiles/file/bomenow.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=30+60+90+action+plan+examples
    • 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_off0001105a.bin
cc77d72146f5ba64d2ff8284b641afa24e8b5a8969715cf82cd2b2c7dcf7b27c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1105A 17340 bytes
font_01_sfnt_off00013d17.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13D17 16792 bytes
font_02_sfnt_off0001552e.bin
8e326d4449898e625e01f8bf6ea9eb01e09b661155bd233cc1b56b15f79ba655
pdf-font-stream PDF embedded font (sfnt) at offset 0x1552E 11072 bytes