Malicious PDF — malware analysis report

Static analysis result for SHA-256 32dedeccd07c4d7e…

MALICIOUS

PDF

88.4 KB Created: 2021-07-01 21:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b22ad5fd2fbfdae18aee0ee8b2d21e3c SHA-1: 5a144f526a0184c0556ced15fd8f65fa98651a83 SHA-256: 32dedeccd07c4d7ebcf071f6688e220b4b044985477241d9a9523a31958e1ce7
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body is heavily obfuscated and unreadable, providing no direct user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://irlanc.ru/uplcv?utm_term=reasons+your+stomach+hurts PDF link annotation
    • http://hayatteknoloji.com/webimage/file/43433887109.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085750054002---74791934166.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf1068c1094---zodegotozutag.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/sawufota.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c21747c87c9---44134628781.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/c4dd713c48b7e8812bc2c6ba635ea77a/wetenadoxaparuworasa.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/2b039d5569d1fb70693a7600c216461b/zexobofawowibowuniwil.pdfIn PDF document text
    • http://blueyee.com/upload/file/011149031208.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084987cbdd88---84143832229.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/p5grh5rafi1d86gcdvl9hkh7ok/joxuzakituzezamuguvanot.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/67ff8b12c09968ad16ed627d45c428e7/worinumafegukebefa.pdfIn PDF document text
    • http://abwcoliseum.com/uploads/files/22907963281.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/pimotubemowuwinar.pdfIn PDF document text
    • http://vantaibactrungnam.vn/upload/files/39443998611.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/aaafb3887f03666d6788fcf93ec42a16/12536305397.pdfIn PDF document text
    • http://ji-tien.com/userfiles/file/bojonizivojugirazutevuxek.pdfIn PDF document text
    • http://firanywiktoria.pl/uploads/editor/file/zoluporotita.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/c63d8f3482c03228e1e1dc495d825349/30036379394.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4fa9074115a44eccd02127d98b8dbf18/lafajipifekowite.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/namilefovapirisumifusaber.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/f158935d01282fa02af425a93ed11c5b/16547482140.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000110c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C2 16824 bytes
SHA-256: e7c7af38451d92b8292f1baee3403cfa851dbdbc414c9a8720b71948b117182d
font_02_sfnt_off00013c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C68 10616 bytes
SHA-256: 4ef49ef9ed1e2cfe026fda68b353dbbe68cd644a151e37d1bf0fbb4647ef3da9

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