Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0a0432cfd4fd1a…

MALICIOUS

PDF

38.7 KB Created: 2020-08-09 11:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1baa801fbf258fc9180b57447592102 SHA-1: 430725d65bff62f37532545d3a586f0cb8c1acd0 SHA-256: 2a0a0432cfd4fd1aeb6564229a4b10b8903844be5ff8de35089f94e2923c3109
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary URL, 'https://ttraff.com/pify?keyword=airspace+classification+icao+pdf', is identified as a malicious redirector. The document body contains numerous embedded URLs, many of which are hosted on Shopify, but the presence of the redirector suggests an attempt to obscure the true destination of the malicious payload. 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.
  • 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.
  • 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/pify?keyword=airspace+classification+icao+pdf
    • http://setujari.barbaramwebb.com/uploads/1/3/2/8/132814930/2a1246.pdf
    • http://files.2424nfederalhwy.com/uploads/1/3/2/8/132814030/2228314.pdf
    • http://files.drinkbeautynola.com/uploads/1/3/2/6/132681647/811566ea96.pdf
    • https://cdn.shopify.com/s/files/1/0434/9735/7472/files/educational_measurement_assessment_and_evaluation.pdf
    • https://cdn.shopify.com/s/files/1/0446/2968/8483/files/caballo_de_troya_3_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9773/files/nafiti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/medajanamumumatasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/initiative_vs._guilt_example.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/47827517853.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/28794289727.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/49479273111.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/talib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/tuzumagudekob.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/xuluguj.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/27879072464.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a68.bin
508e8b534c3f29eb141e283dc4b72746580e2cfb716180bc52fba1fc13e35409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A68 5140 bytes
font_01_sfnt_off00006bf3.bin
49d41d0f4c43d49e8e139fee9fe060eb43f041cab4a5d01550f5d8c42a09aa77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF3 10024 bytes

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