Malicious PDF — malware analysis report

Static analysis result for SHA-256 2888673db9466fa7…

MALICIOUS

PDF

124.2 KB Created: 2021-07-07 00:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d4f815c94e2d0a54a8eea14891a81da7 SHA-1: 8301329f713e29fa4bc783e144cf4678b5a8caf4 SHA-256: 2888673db9466fa74acd51308eb0c3faa1735566e98f5607c231216cbc05745a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and other domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the links and the PDF structure suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9691

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 https://aghs.in/ckfinder/userfiles/files/dosixagot.pdf In PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095e1bef1f8b---24583101892.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a368dc0635a---52756768992.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077f72634276---bifalovuxota.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/109d7b5f5bf20862ddd250caf88079fe/nanagana.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/gexavok.pdfIn PDF document text
    • http://danguykhoidoanhnghiephp.vn/Upload/files/98234870300.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/a507079ef8bbb1bb5951bfb578f7738b/selamorawenaxazuneluzaz.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/51068396916.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/huuomd56glc4u4fkfonmh8h0bd/taleparawumojege.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607459d3e3ec1---50628168802.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/famuxutudatemotezikik.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210623170058.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/47640489804.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6a88ed5bb---kixodatinimofixumupomuza.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/90b5d55b4dfeef846c969fb7cc6c846d/lusuxakidosegejiresenupu.pdfIn PDF document text
    • http://www.truca-taoules.com//ckfinder/userfiles/files/fesagusufowuxu.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/wagasumazagaxurufavaxa.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/05051803cd39913c68bdfad4d535f650/65706415850.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160983fc704921---70134128032.pdfIn PDF document text
    • https://fokusmedia.com/images/uploads/wetoritodudelapowuzat.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095cbe6ee63f---4452387159.pdfIn PDF document text
    • http://fotossc.pl/_files/file/masewovekodewebalugevox.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/17734950329.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/1aojf2eojntq90gf1k5j9fhel0/92150063394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=meaning+of+emptiness+in+englishPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00019188.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19188 29740 bytes
SHA-256: 6c1de53d61c4587afdb5178359d76f9e35a2f38581dfac00e1c4e3d23880686a
font_00_sfnt_off00010f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0F 32632 bytes
SHA-256: 3be2caeee184c80b13ea283ee19b48134d17afc329d7853f588fdcbd72f5d035
font_01_sfnt_off00015817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15817 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17025 10116 bytes
SHA-256: 03ecfcd94ed321267175be50db4f631eed39dff144c49137f3e5e4004aeb0c39
font_04_sfnt_off0001c882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C882 10700 bytes
SHA-256: 6ffee07f89c08161ebbfb9f6f8dfd886555905c208f6b83fa5f2a287bd2d0439

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