Malicious PDF — malware analysis report

Static analysis result for SHA-256 1178612baf585657…

MALICIOUS

PDF

79.7 KB Created: 2021-06-26 01:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5f0b05ed39f791bf8c8ac62a90874e0c SHA-1: 40dcd761307e87153565ea8a97b79fc28038a8fc SHA-256: 1178612baf585657c7ded86e072cd889b1516058226b5239eed12636808691e9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://fixafilm.se/userfiles/file/fapug.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/b6a9713a5d7187fdab38b869ee97c1ab/mivojasodex.pdf
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9fd63388d---66290853461.pdf
    • https://allcreaturesinc.com/files/files/87026481441.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/0955e250b14158536a3ca7d4aedf2496/porimubujaralatinotuvasug.pdf
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d25523232---66443169436.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a967f4657bc---lagigone.pdf
    • https://alarrabnews.com/images/content/content/file/dofesuvadumuwafu.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/b841334f01c30e445f476f25d7dcf0c4/89672664485.pdf
    • https://melz-feu.ru/upload/73134108232.pdf
    • https://xanbiente.de/userfiles/file/67758034182.pdf
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/d7nlqk2hcgi6lif7fee3g9gbv2/43821081539.pdf
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/dacb4a964bf0aeb42092078d91cfebdc/68190697255.pdf
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16095e39819e19---19404592606.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/9e296eb88fb27159246c6b7cd5f129d7/zejomegajaketuz.pdf
    • http://rokakisreunion.com/clients/a/a8/a85ca1e4cfc2bb88d767af442173b437/File/37740852738.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/6ddb4b43faeac71d7b365b5c6c927098/32137925278.pdf
    • http://shukokai-voves.fr/userfiles/file/fogekixuku.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b9366ae6d---28113159499.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ccdd9379086---27529143663.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b547e79bee---menumibixalika.pdf
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/c9e1caf89e5d06b4bc4434ffb8f1b26d/ponigewojetojarikarejonu.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/608b07dc33725646ffb37c22456fc545/petanelejifezo.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160cbeda1a94dc---73728900448.pdf
    • https://siangyun.com/upfiles/editor/files/laxozitovonajakugojas.pdf
    • http://buergerforum-tirol.at/file/35052330507.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=metals+metalloids+and+nonmetals+worksheet
    • 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_off0000d68c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD68C 16792 bytes
font_01_sfnt_off0000ee9e.bin
8b99a8452f2c6b0e45f361faf8434486ce367a9394c50a6f0f32826d66971d0d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9E 16352 bytes
font_02_sfnt_off000118f0.bin
3401f1f9f3eed5b85ae93b1a93302625e72973cd401648eedae13b9e113ae86b
pdf-font-stream PDF embedded font (sfnt) at offset 0x118F0 10684 bytes