Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e063299e505e617…

MALICIOUS

PDF

302.2 KB Created: 2021-06-13 00:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a834a13340ce0b413db89ed318bf6bc1 SHA-1: aafc127bebf655b1047314716108a5b26440a910 SHA-256: 9e063299e505e617f05a5e6cdd9c39f9e1075c571d245b1fe8748271917638e0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, many pointing to compromised WordPress sites and suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9087

Heuristics 5

  • 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.
  • 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://philabc.ru/uplcv?utm_term=yasuo+bot+lane+build PDF link annotation
    • https://studiopros.com/userfiles/file/In PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6ad9a92ca---muluwesibeteluserutubisu.pdfIn PDF document text
    • http://podushka.by/files/files/99302430167.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/kefabalozetivab.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2be16e4374---lawawuxafisekofojexev.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b203463707d---parigijifeboduz.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/40023da4f5c14500e14d11d0dfd5c2c2/zuvenukipavavere.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b19077ae85c---73799800212.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/f2d8fede1912870dd1be371aa8f93d00/betomovoronegab.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/9bb8bf738998afdb6803c80fb5996e05/90447019183.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160772258e9bfa---18840071745.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/31064033991eaf8d9c7547da713ba34a/69377829476.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/felebimidazijusavomabok.pdfIn PDF document text
    • http://jncs.kr/page_data/file/20210518053141.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/f29197a8faa38b386279b31b2b26f864/rakafopezaduva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00041935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41935 6588 bytes
SHA-256: c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285
font_01_sfnt_off0004297e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4297E 4804 bytes
SHA-256: 0508cc2b1c764f42810d81b95cb99c4b7f35659888339722dbaa43973a37cd04
font_02_sfnt_off00043a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A8E 4824 bytes
SHA-256: 12d27a85c3039f0d624605f56e313187019b9a7d7996daf6790926aa604d7d2d
font_03_sfnt_off00044afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44AFC 3192 bytes
SHA-256: 91d175de2fc957d7887a79fcf1885b1b40c3076e7fb2b235478435101fcb1f28
font_04_sfnt_off00045882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45882 18424 bytes
SHA-256: f3139462a1e544276f94ff39953e6e955a984c9bd34cf4e6bcfcf0f66041e173
font_05_sfnt_off000492e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492E1 16352 bytes
SHA-256: a93f0558dd62d1e58b7de82f3e6874ad61abd91e000da1758e4cb6ba26c518a0

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