Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ad322d6f6372cc…

MALICIOUS

PDF

114.5 KB Created: 2021-07-03 13:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7bc5af5ae81fd54dcc174a2367ab6af5 SHA-1: 8d9a33d7dc3c6710a86051c88c623ffb535dbfb7 SHA-256: 74ad322d6f6372ccb6eac6bc3eac738f2ab55a28fb01e210adaaa61d1c7526e9
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to compromised WordPress upload directories, indicating a link farm designed to redirect users. Heuristics and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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 https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/8f9d8cb503bf5179d482ba301bec951a/85378554386.pdf
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb1ca5f0127---betaresejajurajakasijuku.pdf
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b070b5cce51---gunotonowaxev.pdf
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fe550f1e6e97630c7bf7087e43aa8771/fuxosararedopo.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b90a2c6b4---kunamosebamixijajuvabufe.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b30bb342a8d---pufefinenojusijemoroxolun.pdf
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf13428dfc---59622622885.pdf
    • http://roughriders66.com/clients/f/fa/fa96273273f04fd2a06feef12b1e4d70/File/56050831017.pdf
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/d9f357ee0e16e2e5e09fcc5428751a16/gozoma.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/096c2d80454af91239b570a8b6680104/zuzekali.pdf
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/7b71acb2ee3aec0534dc555cf81f7969/beduditirezodowukivaros.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb5ec534f7---10424604511.pdf
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/fbaeea1b8bb249fc51fe2d470359cea1/12701387531.pdf
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/nmgo0pqj9oqrgdlb8dk5ntjcb6/sumuzobekowiroxiwose.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccc3189ca5---98264314124.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1268d58161---zewozopip.pdf
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/c876a6376c3ed61f473a531669c85187/lakabemu.pdf
    • https://rcot.org/userfiles/file/99556562819.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/m4nnu23jlsbpvjjl659q1k7eh7/dubaxu.pdf
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b09fb030593---90868007994.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099646ac2e08---pememor.pdf
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/9151faee163c361987c445e1713398c3/tulaberex.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=mother+of+dragon+naked
    • 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_off00016120.bin
37dd431e383239e6097b5be485759b54a60cdf6d6712b66f0bd888afa1355e7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16120 16932 bytes
font_01_sfnt_off00018d4d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18D4D 16792 bytes
font_02_sfnt_off0001a564.bin
fe9a89ca25058565ae12c6d71bf801d2ab6587b194a08b1f7b09f326f6e767ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A564 10412 bytes

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