Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c84ffcc6ada908…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 07:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb4f2ddd41a608f3b99fb932dc10b70c SHA-1: 42c23ebd6adf501d4122b0a8cd7e394ec99d737d SHA-256: 55c84ffcc6ada908ffeced30d0fdaddb8bcb5c03fed9bc5a5590764528827fc5
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=banyan+tree+information+in+kannada+language'. This link is part of a link farm designed to manipulate search engine results and likely leads to further malicious content. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the same lure text and URLs found in the heuristics.

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/pify?keyword=banyan+tree+information+in+kannada+language
    • http://zomavesoz.every21seconds.com/uploads/1/3/2/7/132710592/viwexoz_fikov_bafozegejekabos_galimi.pdf
    • http://files.walterslawpc.com/uploads/1/3/1/6/131636746/fulexuzuko.pdf
    • http://farovil.metamorphosskincare.com/uploads/1/3/1/4/131438379/18a0c46.pdf
    • http://files.johnzion.com/uploads/1/3/1/4/131453870/mawimiti-xutula-towajo.pdf
    • http://mekaremi.consultorianora.com/uploads/1/3/1/3/131398140/nifale-vegumarositi-fusid.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/75233143440.pdf
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/aashto_manual_bridge_evaluation.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/friendship_is_witchcraft.pdf
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/statistical_data_analysis_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/39792913330.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/vuget.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/67152488104.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/wexazugi.pdf
    • https://cdn.shopify.com/s/files/1/0450/6091/5350/files/pictionary_junior_cards.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_off00006abe.bin
241610e2f5236e76aa365aaf80e9dca23864124a93e55a108e43a74e497d2451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABE 5148 bytes
font_01_sfnt_off00007c30.bin
72c5b70132c52326a6839066a20066cd4e01d3ba9cf6101b625a5621b5a359ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10272 bytes
font_02_sfnt_off00009ea8.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA8 4324 bytes

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