Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a60b365ee5d4d8…

MALICIOUS

PDF

50.1 KB Created: 2020-10-30 02:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ace8b282de528c3f9ef684334a88c2d2 SHA-1: 3bbf66fd35303c1ae05d7fac15ee044d15e484d5 SHA-256: e7a60b365ee5d4d8f624540fdf34776aab89d938412da28db6a842a3e7eb95a1
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious sites. The document body and embedded artifacts suggest it is a crafted PDF, likely intended to trick users into clicking the malicious link, possibly under the guise of providing a manual. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.com/123?keyword=kubota+bx2200+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_5f9b462e62b6d.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/2379673.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/tifafa_godolipe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f8d804de3aaa.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/30074.pdfIn PDF document text
    • https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/zenanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_5f91fdfdf0b8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f891d8ea8e2f.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://uploads.strikinglycdn.com/files/330724bc-9ad8-4221-92ee-c16e0c38459b/regofemigisojorefaje.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/97297274108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fbde150-9716-4d3a-8685-179ee5783244/18253350311.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6943 5080 bytes
SHA-256: b828a111c51ff5f1bb07004465827b59e60f6529ab6127671d2e114ecd3d162f
font_01_sfnt_off00007a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6E 15888 bytes
SHA-256: daea78094598f786e28c9a6c0f7252d38ce39196b698ccacbeb7682f9b24aaa0
font_02_sfnt_off0000ade6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADE6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f