PDF malware analysis — malicious · 4aa105b194f0175f

MALICIOUS

PDF

45.2 KB Created: 2020-08-02 16:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1abaf0c1de63d7456161e97ba2831978 SHA-1: e9e29da59b8c85002e0451d45a70949211771c50 SHA-256: 4aa105b194f0175fe51e86385608598e376ca9ad01ba105ebc21f4a072e13f85

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'cash flow' and includes the malicious URL. The presence of numerous external PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.ru/pify?keyword=direct+vs+indirect+cash+flow
- http://files.nepalrvt.org/uploads/1/3/1/6/131606289/9a163d3.pdf
- http://files.zumbawithmlinda.com/uploads/1/3/1/4/131406337/7881585.pdf
- http://files.twogreenshoots.com/uploads/1/3/2/6/132681479/luniz.pdf
- https://cdn.shopify.com/s/files/1/0429/2981/5705/files/suriziw.pdf
- https://cdn.shopify.com/s/files/1/0431/3127/3365/files/nobuzufisibilejadovasa.pdf
- https://cdn.shopify.com/s/files/1/0431/8288/2980/files/43630869068.pdf
- https://cdn.shopify.com/s/files/1/0429/0579/6774/files/19229988962.pdf
- https://cdn.shopify.com/s/files/1/0429/2804/6233/files/14930570202.pdf
- https://cdn.shopify.com/s/files/1/0431/3006/0955/files/tizufugolevidipugin.pdf
- https://cdn.shopify.com/s/files/1/0432/1171/8820/files/36991332729.pdf
- https://cdn.shopify.com/s/files/1/0438/4302/7104/files/19979275368.pdf
- https://cdn.shopify.com/s/files/1/0432/8125/2512/files/67013326425.pdf
- https://cdn.shopify.com/s/files/1/0430/1481/5901/files/medajodebaxodo.pdf
- https://cdn.shopify.com/s/files/1/0433/7516/5594/files/marasudok.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1741554469.pdf
- https://cdn.shopify.com/s/files/1/0437/4613/2119/files/filumis.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_off000065bc.bin` `86a06bbcdba2df55a67d287dde769aa9c83e997d0dc67635c8994d3b8b3fd0f0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65BC	5048 bytes
`font_01_sfnt_off000076f2.bin` `0c479722eb85545f4b8cac963691c739183bf6899cea92ada992cc37a81a53fb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76F2	10236 bytes
`font_02_sfnt_off000099ef.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99EF	4324 bytes

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