Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf2363ce98c5daf…

MALICIOUS

PDF

51.0 KB Created: 2020-09-28 20:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 037c93cb05f4edbab8855fd2d9e2bc32 SHA-1: 9bb1742a97491666f0aa7fa676a28de4b10f6d03 SHA-256: ebf2363ce98c5daf364a97bd4575ef4fd8d42566cc5886a40d2f96769fb00b8d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://gettraff.ru/mozel?keyword=amar+chitra+katha+bengali+pdf'. This suggests the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the redirector link are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/mozel?keyword=amar+chitra+katha+bengali+pdf In PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/kowazedonulorawuvum.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/noxujokajev.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/remoku.pdfIn PDF document text
    • https://site-1037192.mozfiles.com/files/1037192/majejiduliwomebaj.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/zinimejulitujinasovas.pdfIn PDF document text
    • http://files.brewhoundsupplies.com/uploads/1/3/0/8/130873989/9318048.pdfIn PDF document text
    • http://files.rozeefashion.com/uploads/1/3/1/0/131069899/506481882ef9.pdfIn PDF document text
    • http://files.taftmusic.com/uploads/1/3/0/7/130738679/muxatuxekif.pdfIn PDF document text
    • http://files.fogvapery.com/uploads/1/3/1/3/131382982/sukemu.pdfIn PDF document text
    • http://tuvasi.harriscreekpta.com/uploads/1/3/1/4/131412290/5423395.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/wuberoputapikevutaboz.pdfIn PDF document text
    • https://site-1036652.mozfiles.com/files/1036652/tupowapajejafevox.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
    • 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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn 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
font_00_sfnt_off000045f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45F7 5260 bytes
SHA-256: 86ac94f38c12706f465e0abd5d7b9d079fe3661838e2357b30f606225d80d1d9
font_01_sfnt_off000057a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A6 10740 bytes
SHA-256: 0921cdfd9848c01bbfb21d3a3d621db47ebdc403ca34edbf538b650b65f2f3e8
font_02_sfnt_off000079aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 9864 bytes
SHA-256: 5e1b7685c74938a2ec49965e71fc8d171bb890fa7214f23c222ba71bacf2ab4b
font_03_sfnt_off00009b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B93 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_04_sfnt_off0000b0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361