Malicious PDF — malware analysis report

Static analysis result for SHA-256 069da0c82c4e252f…

MALICIOUS

PDF

80.8 KB Created: 2021-09-02 14:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 17eec0fc1de8629f3a7e142b875bfc92 SHA-1: e5d3c325f2df2c68bbcc54208c21d4dda186cffa SHA-256: 069da0c82c4e252fbc2c55e35786127e8f38575db57fff2966c4ee6c1de42564
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Numerous embedded URLs were found, many pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The document's structure indicates it functions as a link farm to direct users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/197bbd093307b482dc2e2fcc07f6dffa/89907139457.pdf In PDF document text
    • https://sonarmusic.hu/up_image/file/52754755244.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100490017c0c---nawadutetujixixokoleviju.pdfIn PDF document text
    • https://kildevangen.dk/files/56317358370.pdfIn PDF document text
    • https://computerzone.pk/file/94356834941.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/41011221514.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210728051322.pdfIn PDF document text
    • http://soles2walk.cz/data/file/35797487782.pdfIn PDF document text
    • https://starwebline.com/calisma2/files/uploads/26724963434.pdfIn PDF document text
    • http://ourdesign.hk/ckfinder/userfiles/files/7529155803.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/q22ir0almvembtsbrlkafhhn4b/mopatuvonam.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/jj0at8ts5bqh2391phcugarq0l/57464874618.pdfIn PDF document text
    • https://capecoralliving.com/media/file/81869573321.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/42844473433.pdfIn PDF document text
    • http://psychoterapia-przemysl.net/img/userfiles/file/zebibipakoxetipib.pdfIn PDF document text
    • https://duvanco.be/docs/files/lukotovebumuborovogudir.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610a0bc448c41---zotuzifan.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/75042695079.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ecb669d549---nobebokoxugisotesivo.pdfIn PDF document text
    • https://eingangrad.ch/userfiles/files/24058179410.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba9f8036fa2---44679703049.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b6baf2cdcf7---47642973682.pdfIn PDF document text
    • https://micsys.in/userfiles/file/wapidumediwokeretivukevud.pdfIn PDF document text
    • http://rayocazar.com/images/elfinder-1.1/files/file/tenakexudozozamo.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/luwewozaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=beden+dili+e+kitap+pdfPDF link annotation
    • 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_off0000d707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD707 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF19 19684 bytes
SHA-256: 025fd5e79c0bf4fa1dd6414ebd631ffa797e78cf0475d382a35ca5b302173648
font_02_sfnt_off00011eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEB 10248 bytes
SHA-256: 21d85079ec40076e1cb718c33bbacb416b60b0b7265b31a96909e2f191c336b4

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