Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6308454f86eef54…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 17:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04a40ca14415a0f9504fe085d9795922 SHA-1: c35fc7ea7d132de26b281a8bbbd8073e3f13662a SHA-256: e6308454f86eef544cafa8faaff1d36c26fdfc3c1c4670d31549221217e25087
150 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.com, which is likely intended to lead the user to a malicious download or phishing page. The document body, though heavily obfuscated, also contains this URL and appears to be a lure related to 'game backstab apk obb'. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning technique to improve search engine visibility for malicious content. No scripts were extracted, but the primary attack vector is the malicious redirector link.

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=game+backstab+apk+obb
    • http://diziwetuw.iansstories.com/uploads/1/3/0/9/130969483/kifivere_lulegusekepi_rudotevep.pdf
    • http://files.westbrookvillagefinearts.com/uploads/1/3/1/6/131606343/7794460.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/16343010531.pdf
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/acls_test_questions_and_answers_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/basenox.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/powusoko.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/earth_science_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96328102714.pdf
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/gcse_maths_simultaneous_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0454/6088/1560/files/mifemeburo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/rafoboxafabomapikamo.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_off00005d20.bin
f9cd0ec3c3e7921df5da2a22252c77ee1ca6171819b135807a9d7a040cad3a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D20 4820 bytes
font_01_sfnt_off00006d8d.bin
9b46df8cd8269a68424f332204ebf38980657ff69b19229481ff4ac371db8fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8D 10128 bytes
font_02_sfnt_off00009052.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9052 4324 bytes

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