Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ac22b96c1e6a0d…

MALICIOUS

PDF

52.0 KB Created: 2020-09-20 01:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d51d6e91d0b87a8b3054d4ca095d3652 SHA-1: e0419201005f516e42f622780be2495e98ae0c89 SHA-256: 07ac22b96c1e6a0d89e72a7933e5f5441cd51a11b360bc10135a29918291def2
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game guide, likely intended to trick users into clicking through to malicious infrastructure. The ML classifier and heuristic firings strongly indicate malicious intent, likely for phishing or malware delivery.

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.club/wix?keyword=love+nikki+stylist+arena+guide+imperial+ball
    • http://mabaloxa.leinsterbistro.com/uploads/1/3/1/4/131453181/0d371828359a1.pdf
    • http://files.sankofaedgroup.org/uploads/1/3/1/4/131436967/lipugimene.pdf
    • http://files.dytrivia.com/uploads/1/3/0/7/130776167/fumudavi.pdf
    • http://nexepuxep.fulfilledshop.com/uploads/1/3/1/3/131379724/jikibado.pdf
    • http://sojemu.missuspageantry.com/uploads/1/3/2/8/132814930/5936453.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://0376f24f-4c5d-4008-9d08-767bd3f540a3.filesusr.com/ugd/49f5ef_f481a195403c4575a7b48510d48cfd08.pdf?index=true
    • https://0fa96eaf-e02c-4867-8cf3-d30680208650.filesusr.com/ugd/3e7897_eb4d8a6a6666451b8b0a9daf7091cbfa.pdf?index=true
    • https://e15549ee-f0b0-48a6-9c2c-4c29d07feef8.filesusr.com/ugd/81ef4b_5e2712a290a04e69a635928d0f7944c2.pdf?index=true
    • https://3a0ad06b-1a42-4a79-b01c-b6553cd5a709.filesusr.com/ugd/b7082a_2914ba4e37f04619acc63fc3f3de5ab9.pdf?index=true
    • https://ecfe530b-477b-4fa6-b6f9-9d1708bc7f1d.filesusr.com/ugd/10cedf_41715143be7b4873bafe6350bdfa1f73.pdf?index=true
    • https://c9d62615-089f-4c94-9f60-bfc633ffb498.filesusr.com/ugd/a42eed_b04c6a27ed8b4d049fff5c63699356a3.pdf?index=true
    • https://71287f54-2c8a-49c8-ad7a-24d586242a25.filesusr.com/ugd/622218_b53381f554f241748bc45d4698a48aa8.pdf?index=true
    • https://56ede2b4-29f3-4e9f-b2dc-048f7d460a41.filesusr.com/ugd/430cb2_f1cae869de2749efbf85af0782a9c3c0.pdf?index=true
    • https://5a853f71-0be8-4bfc-b82b-63d0d7c9085e.filesusr.com/ugd/38062a_dd4357ec68eb46eabff0e4e1d87335e7.pdf?index=true
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d76.bin
1d85d3d1bcd03961dda518c01e2afbad2724ba677774be72a8903e9d62a9f391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D76 5468 bytes
font_01_sfnt_off00009000.bin
0c95b597e1149c835f720cd803b15acd8a2595dc37d8438a3ee4db41e0dda74a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9000 10644 bytes
font_02_sfnt_off0000b424.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB424 4324 bytes

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