Malicious PDF — malware analysis report

Static analysis result for SHA-256 208e0e74c7088569…

MALICIOUS

PDF

79.0 KB Created: 2020-08-03 11:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f092255d14fae52722641ead6a5d8cb6 SHA-1: 48468a10985a90e10e2e707e7597e158616e73ce SHA-256: 208e0e74c70885690cbad349e7f567c6995229fb08d4862ef4d273d9358e884d
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL and a reference to 'Silent hill 3 endings', suggesting a lure to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to host further malicious content.

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=silent+hill+3+endings
    • http://files.jnicolespa.com/uploads/1/3/2/7/132712006/xopivofa.pdf
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdf
    • http://files.nccaaproam.org/uploads/1/3/1/6/131606289/sanarelezesutuxesu.pdf
    • http://files.bestpropertyph.com/uploads/1/3/1/4/131483138/divujafokajum.pdf
    • http://files.jaxcars.net/uploads/1/3/0/8/130813643/1de0e83600d.pdf
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/pekadafiwixog.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/gorazunigixologofu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/52856007126.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/lipevijisabowe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/pdf_editor_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/62403705901.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/lititepunowazuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/lozanezudigepug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/85120073473.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/41187032232.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_off0000c631.bin
d809dfceff6929b5084f456d5450ae4cc93a5e6a43b74b1df8b693f10d563ee4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC631 12188 bytes
font_01_sfnt_off0000ee05.bin
7f325b52243fd14938a9bfc4587c42d6d1dfdca02effc84bf754ffb172402cfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5048 bytes
font_02_sfnt_off0000ff33.bin
6ee08081dd1a6dabada0409f85afcf5bbdbc2e44152135ce0775059a6f9e0aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF33 15408 bytes

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