Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29ee213e6050879…

MALICIOUS

PDF

89.2 KB Created: 2021-09-07 00:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 691ce385268ff67650af0f91e96458d2 SHA-1: 235e32fafabe2b4bccfa5d65aa191c8bcfb18061 SHA-256: d29ee213e6050879526dd4950b41900c1121b245a6e6bf8008af22efcdc77f49
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://archism.ru/uplcv?utm_term=herbal+tea+benefits+pdf PDF link annotation
    • https://dgaspcsm.ro/ckfinder/userfiles/files/pibazomuvo.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/xupajefodikawodosur.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847d10ac8ca---nobesobojafuvorot.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/fd4dadf8602cf0bfd951736e9a11937c/44086245809.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/tekutu.pdfIn PDF document text
    • http://murielbellhomes.com/userfiles/files/kuwinudodanuwuvag.pdfIn PDF document text
    • http://luatsugiadinhviet.com/upload/ck/files/vaburuwunonoxukesilojado.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/1e2e4c4bc0345d1ac0619e5d74a44e23/88376730645.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/4253285511.pdfIn PDF document text
    • http://zhuoer.ltd/userfiles/file/wodesivudurabex.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/59401c3ec27db19c4af8368eb6f79a94/sebadozuwasorotibibuze.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/q6peiqqpbrjgnnn3dnarej5k40/16193718551.pdfIn PDF document text
    • https://htapigroup3.com/contents/files/49905102399.pdfIn PDF document text
    • http://carszana.com/image/upload/File/geluvamo.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161069f1dc61e2---mugagumaxem.pdfIn PDF document text
    • http://zajazd-broadway.pl/galeria/file/kavejifugus.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/6fdccd198942385996b46382c9456287/14290589017.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/7eumud1ob7o1bnmq52bid2it21/redeterigamokisax.pdfIn PDF document text
    • http://fructusartis.com/i/File/73043495050.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/665e405c1edc20617eb76938ec571aac/24281623511.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078d3f5e9d7d---98278418838.pdfIn PDF document text
    • https://ckmusicdesign.nl/userfiles/file/geposunedexomejovemu.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_off0000fbc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC8 10500 bytes
SHA-256: ccc4225ae70f3b90cbdf19bcf03c70f8e56fa2939b2cb5306f2d906ce26cc0e3
font_01_sfnt_off00011379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11379 16888 bytes
SHA-256: f1dc33b52ad6e1becce68e2df9beb551069c266f0fa74ffd08b8fdbe1e4c394a
font_02_sfnt_off00013f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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