Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf2277102be9232…

MALICIOUS

PDF

111.2 KB Created: 2021-07-02 23:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 677ecb5e3b385a641f0bb85582734519 SHA-1: 24815a1eaf1f536d16ae048b9a2e35bad178a74d SHA-256: 2bf2277102be9232613031804e72e0c9732cce70200a0ac99b598bea27aff9a3
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is identified as a link farm, with many links pointing to compromised CMS upload storage. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, but the presence of multiple suspicious URLs is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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://pixomot.ru/uplcv?utm_term=maya+angelou+poem+touched+by+an+angel PDF link annotation
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607437c485f61---39990254521.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/44f35afdca78b3803bc6f0949471a8ed/67556888976.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608212aaa450e---50054992546.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608442c7bed1e---wefedazoperojukevaror.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094a39359f27---lumaditozos.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/zigumizuxabivusote.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/79597313470.pdfIn PDF document text
    • http://doreenindiatours.com/userfiles/file/5147910560.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/salakevinutiledimod.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/4948344e88cb64de19f12278a95e9dcd/padufodedolerefu.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/598626d58d19c63e72a72b0a41a0dea7/80980637806.pdfIn PDF document text
    • https://onelineservice.it/file/sigatapeluvatumawileded.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608855d93cc2b---73797636628.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/65872170462.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723a2beba42---42170769361.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/situlujug.pdfIn PDF document text
    • http://aiskreunion.com/clients/b/b4/b417c2091670ce0b0d78f4b231aea02c/File/gifode.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/bedapodu.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/d0b580967fbe2ccacdd6e723b814c4af/77576474811.pdfIn PDF document text
    • http://rajeshjshahani.com/clients/d/de/defaee86e9f1fedea086b53a5072ac2c/File/69877148222.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/reselovotixid.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a0752af35c1---63465686573.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/kuska1uo7pu1pf4q6jiko45uch/zatuwenitukel.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077272155332---delilujo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C1 16804 bytes
SHA-256: 7e318237036e846411a9d3fa38fd868b0c780ba633733b14f7c900e163323dcc
font_01_sfnt_off00015256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15256 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A6D 10948 bytes
SHA-256: ae7e7ce794572ff4aa138c6c0f910eba1408c847863df3426f2c7c1acae4e13e
font_03_sfnt_off00018333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18333 14172 bytes
SHA-256: 97b6d2e3f82c94cbf36220cb04c95dbab9c221a05bbbe8cc09e0d5ed558c8626

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