Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec65c006209cea7…

MALICIOUS

PDF

85.8 KB Created: 2021-06-17 22:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 47cd8f1854bd129ce319bc8d3a8a7f38 SHA-1: d5ddac52c3f90bdc69a85e9e917c841b65eeb18c SHA-256: 9ec65c006209cea72555e5275cf9a093d66b14de08de376c5b75394c3edc1cfd
156 Risk Score

Malware Insights

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

This PDF document contains multiple links to external websites, many of which appear to be compromised or disposable hosting. The document body, though heavily obfuscated, contains references to 'jdk 8.2 download 64 bit', suggesting a lure to download potentially malicious software. The presence of numerous links and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://nfc.soo.jp/file/dewatibesaxemiwojixenefo.pdf In PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16088dd65a0a13---84539396759.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/9cf74f8d56b25bcd476899d388a66d79/bipanix.pdfIn PDF document text
    • http://whsclass1968.com/clients/f/f8/f849445bb2fb8f42e7c863050dc1ba38/File/mazanetajodelabofekiluw.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccad50b774---29301772040.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/80b1826921c02f9c3d02ca9f51db2a9b/funobakenu.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/ginuvitobizoxojuxa.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/5aefbc4964af51dc07f0f1970ad68f93/jerulelatijelaxajetiripa.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/pirofimuwofute.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a7212aca92e---22995751244.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/7716bdee8a8470bad6952694fcc748e7/lenexisaxufajijobuwoxo.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/mb4i8d0qbku2su77mhsc428ul0/87881359929.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/93ed371b92eb123ecbd6d95ee90fdf13/raxuwogewiximekener.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072a2a134c59---bezoxativemasawejonifo.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/64e3b269013b7273b73f527b4f15f6c1/kazukokibafukowizusewamu.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/b16325d6d2c0e60e9b4f724e2d8970c7/rugikix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=jdk+8.2+download+64+bitPDF 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://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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EB 5100 bytes
SHA-256: 741aaec85ec3a29027817711a2a5db257e57bef711873e548f34becd4316f350
font_01_sfnt_off0000fa63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA63 12828 bytes
SHA-256: 54fbc9aaf8282f2eb67909f725ab134d69038adc82d543503c20a0080af5d811
font_02_sfnt_off00012532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12532 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61
font_03_sfnt_off000139fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139FC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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