Malicious PDF — malware analysis report

Static analysis result for SHA-256 2baca09f7c04512d…

MALICIOUS

PDF

76.1 KB Created: 2021-09-10 15:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2d8651c88d31f7fb9de94a42f4509722 SHA-1: fc03b0e7df75bd22539797eb2550cb10daa59227 SHA-256: 2baca09f7c04512d0c80ed85d9e80bd1ddd04e14c911aaa677c071412fb8ee55
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised websites or disposable domains. The URLs often contain terms related to software hacks, suggesting a lure for users seeking unauthorized software, which is a common tactic for distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://pixomot.ru/uplcv?utm_term=truck+simulator+pro+2+hack+version+download PDF link annotation
    • https://greenfuturevietnam.com/Upload/files/49684891720.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/416b76fb47ebd8ebeb96660f9abda3a3/50078021939.pdfIn PDF document text
    • http://yourhandmadeitems.com/userfiles/file/zipuvul.pdfIn PDF document text
    • http://superlitefan.com/uploads/files/birodizojiwasawixu.pdfIn PDF document text
    • http://mottaing.eu/userfiles/files/62790938081.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/74822563582.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/41377062345.pdfIn PDF document text
    • http://thephinhmienbac.com/upload/files/nunugupo.pdfIn PDF document text
    • https://futurefacesmiami.com/uploads/file/70728464715.pdfIn PDF document text
    • http://zbigniewrodak.pl/galeria/file/levixitabuvopeli.pdfIn PDF document text
    • http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/wovumoxuxolokujibo.pdfIn PDF document text
    • http://sethhukumchandschool.com/userfiles/file/jenewotaruzejufojuwim.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16130376b132a2---xelevunirim.pdfIn PDF document text
    • http://sperrincaravans.com/images/file/41795122477.pdfIn PDF document text
    • http://vietsinphar.com/uploads/files/13028790809.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161329e45a89ba---nonokedo.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/60574888831.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/27343841069.pdfIn PDF document text
    • http://eot.mn/uploads/userfiles/files/zerev.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/36240205332.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/jtj8tjp4tujaq3vbh5edl38okq/10362640823.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/43152620512.pdfIn PDF document text
    • http://studiostocchi.eu/userfiles/files/88499839711.pdfIn PDF document text
    • http://akwarella.pl/user_uploads/file/zinunubiburerovafukuseg.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161349b9320d65---36038063307.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_off0000bde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE4 11208 bytes
SHA-256: 73b0e315ab8348d24e8e4909e7250b612b67c4bf179bb0ad431636ce1db12acc
font_01_sfnt_off0000d80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80F 18672 bytes
SHA-256: 78f9cb941abc59d86a1272616919305bca2e9bf15ebcaba73c7d0472a2b7310c
font_02_sfnt_off000107fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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