PDF malware analysis — malicious · ef6840abb7e8bd0a

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 19:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c1a37050223b1e2dda8f1cc96b9f13ef SHA-1: 4047c5c522d721af5fad8f6b8aec866a3590be97 SHA-256: ef6840abb7e8bd0a7b980180bc41171dd1aed20b0024282463ad4c6d7d0af2e6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a specific redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains references to 'Android games mod offline apk' and the malicious URL, suggesting a lure to download potentially malicious content. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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=android+games+mod+offline+apk
- http://files.changethenarrative.net/uploads/1/3/0/7/130738548/19b7229c1d9.pdf
- http://files.shopkoco.com/uploads/1/3/1/4/131452938/maligosoj_dijeniwigapo_remupevupoteka_tewajetatuvere.pdf
- http://files.mylocalpilates.com/uploads/1/3/0/9/130969481/f829f52ad31f733.pdf
- https://cdn.shopify.com/s/files/1/0430/1615/9381/files/maxisutu.pdf
- https://cdn.shopify.com/s/files/1/0429/5373/6351/files/nidebufosepot.pdf
- https://cdn.shopify.com/s/files/1/0434/1871/4264/files/46020589831.pdf
- https://cdn.shopify.com/s/files/1/0435/5771/6117/files/eeo_component_2_reporting_requirements.pdf
- https://cdn.shopify.com/s/files/1/0430/0662/3903/files/tufabumemos.pdf
- https://cdn.shopify.com/s/files/1/0430/4217/7181/files/24073557095.pdf
- https://cdn.shopify.com/s/files/1/0440/0391/7974/files/43932666079.pdf
- https://cdn.shopify.com/s/files/1/0431/1403/7409/files/coordinate_geometry_class_11_ncert.pdf
- https://cdn.shopify.com/s/files/1/0430/3434/5625/files/nizip.pdf
- https://cdn.shopify.com/s/files/1/0432/2433/4498/files/26788346939.pdf
- https://cdn.shopify.com/s/files/1/0428/1332/5471/files/432497642.pdf
- https://cdn.shopify.com/s/files/1/0432/0555/8436/files/27299310354.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000056a8.bin` `d50cdbd610706aa5dd866555dacf5a68f9f1a26e0f6f89cdd69933136a32cc17`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56A8	5416 bytes
`font_01_sfnt_off000068f8.bin` `8d9a6d499735c8dd65bf9d1232fa89e5300fa4decb25dbd5307f67c419c9d903`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68F8	3272 bytes
`font_02_sfnt_off00007614.bin` `3b99c1afc9f447ad9509637c68238d921c586e58a4cd1e43fbebe5556ad8f902`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7614	10180 bytes

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