Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0746bc9e35ba0d…

MALICIOUS

PDF

42.8 KB Created: 2020-09-01 05:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1de0e4ee4c2169e5410030cb5b96ad51 SHA-1: 554b4607c5caf337b11b2f1221a0de79b5bd6346 SHA-256: 3d0746bc9e35ba0d448e4d548c7c94ed9f033bed3399f8d6329161f0aa3cf0f8
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=tamil+songs++for+mobile+kuttyweb'. This indicates the document is designed to lure users to a potentially harmful destination. The presence of numerous other PDF links, identified as a link farm, further supports a malicious intent, likely for SEO poisoning or driving traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.cc/wix?keyword=tamil+songs++for+mobile+kuttyweb
    • https://static.usrfiles.com/ugd/912de2_0aac6c18ba6944a797814f4ebf2ecf37.pdf
    • https://static.usrfiles.com/ugd/b4609a_bbc936e5ed6f4cb983feac78a2630a27.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ecce2c2441a42d0b8ca3ab46d43b0e0.pdf
    • https://static.usrfiles.com/ugd/b13fd1_721a475fadcb4b119fdbfca54849a573.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9f18cad06e041a6baedb4428c042c3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e798da19405e44519cb2ee4972d8b6a2.pdf
    • https://static.usrfiles.com/ugd/8cbfce_c07dbc5fcd0647f4bb377715e04cf8c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcdcae093c5d4f0183a0be9bb8c53f65.pdf
    • https://static.usrfiles.com/ugd/739437_68d79417dec649818ccd6c67188dbaad.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_47ee10e4828f4953b787625ea062f347.pdf
    • https://static.usrfiles.com/ugd/1df9ea_9dae5f9bad3b4673ae5a239f2a297f0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce275719b69a459aba55253b1fe4c873.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/boluxomegerofewemidobadan.pdf
    • https://cdn.shopify.com/s/files/1/0436/1660/0227/files/abbaigaru_songs_ing_come.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051fa.bin
9c71582bdee522b1a9a78953990681b8eecb37f0621804f6cc213c3731233331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51FA 5316 bytes
font_01_sfnt_off00006412.bin
e6be80011f83b59392182f912c8bb1f9819b15636786f7fddbcf2d989fabaff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 13612 bytes
font_02_sfnt_off00008ea8.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.