PDF malware analysis — malicious · 7d64710d24700bbf

MALICIOUS

PDF

56.8 KB Created: 2020-08-01 23:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 44fdc81838ece08ce4eb7ba089f1c7a0 SHA-1: 518d56918e1073eace8e79792d416c111ca41135 SHA-256: 7d64710d24700bbf026bb510a10963000e1c680c5d50885ae5bd00bbc3fefb2f

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=cs+interview+cheat+sheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the text 'Cs interview cheat sheet' and the malicious URL, suggesting a lure to trick users into clicking the link.

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.ru/pify?keyword=cs+interview+cheat+sheet
- http://files.thepotwarehouse.com/uploads/1/3/1/3/131383743/xajurajumud.pdf
- http://files.transportofyesteryear.com/uploads/1/3/0/7/130776001/gefaxuzujajerav-jigivimij-mudasene.pdf
- http://files.shenandoahpiper.com/uploads/1/3/0/7/130776120/3972640.pdf
- http://files.civil-vapes.com/uploads/1/3/1/4/131453684/kakoziwedi.pdf
- http://files.thepotwa
- https://cdn.shopify.com/s/files/1/0440/5005/5318/files/givejemosekiruvatejalelit.pdf
- https://cdn.shopify.com/s/files/1/0431/5004/9446/files/jifumixakameviw.pdf
- https://cdn.shopify.com/s/files/1/0433/3866/2053/files/21217446874.pdf
- https://cdn.shopify.com/s/files/1/0434/0835/9589/files/rowazusa.pdf
- https://cdn.shopify.com/s/files/1/0435/2681/5903/files/60961780108.pdf
- https://cdn.shopify.com/s/files/1/0440/9825/7048/files/wetipunikevoza.pdf
- https://cdn.shopify.com/s/files/1/0427/8052/4710/files/fedujegiboxe.pdf
- https://cdn.shopify.com/s/files/1/0433/6576/1176/files/89015135599.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1741554469.pdf
- https://cdn.shopify.com/s/files/1/0431/5004/9448/files/46202745792.pdf
- https://cdn.shopify.com/s/files/1/0436/7784/3609/files/katiz.pdf
- https://cdn.shopify.com/s/files/1/0436/5778/9605/files/92045290709.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_off00007b47.bin` `7ce3810d3f245178bc59a900ceed7852e9fca11a5450bd5991af42906872c265`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B47	4912 bytes
`font_01_sfnt_off00008c0a.bin` `f37943d6b255f3608ef4067e7f8eb1562018c181e876025903da03f885205bf9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C0A	16956 bytes
`font_02_sfnt_off0000c0dc.bin` `b2cbfceaf44fc4a56d1321c5677f125dfbde6a5f8c873b6a17361dd7c2aa5302`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC0DC	16232 bytes

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