PDF malware analysis — malicious · 9acf49071de7e51a

MALICIOUS

PDF

36.8 KB Created: 2020-07-15 13:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6e2f54109804a29b3fd45dc3350982ad SHA-1: 03b68e3579f31769465f6f4a98697d3fa06e1af6 SHA-256: 9acf49071de7e51a44f779c66ec15190be1ff28dc3648620b39797a4c7753bc6

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to malicious infrastructure, disguised as a worksheet answer. The document body is heavily obfuscated, but the presence of numerous external PDF links suggests a link farm or redirection tactic. The primary malicious URL identified is https://ttraff.cc/wb?keyword=calculating%20gravitational%20field%20strength%20worksheet%20answers.

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.cc/wb?keyword=calculating%20gravitational%20field%20strength%20worksheet%20answers
- http://files.zenmethodhuntsville.com/uploads/1/3/1/3/131397938/zubuxisewizoles-fawufovis.pdf
- http://files.free2code-initiative.eu/uploads/1/3/1/4/131407010/b019c.pdf
- http://files.jleefmusic.com/uploads/1/3/1/6/131606631/fb24f6eee24411.pdf
- http://files.ge-solutions.ca/uploads/1/3/1/3/131378899/4ade9848b2320be.pdf
- http://files.jleefmusic.com/u
- https://vavokoze.files.wordpress.com/2020/06/xuvifawavozojinomuvob.pdf
- https://vugifiwa.files.wordpress.com/2020/07/39355670648.pdf
- https://gukiber.files.wordpress.com/2020/07/pibegakijufanixuvidu.pdf
- https://jijafozivofi.files.wordpress.com/2020/06/ripafakepatatumuwixer.pdf
- https://ribodijexob.files.wordpress.com/2020/07/sonupax.pdf
- https://dazixapuj.files.wordpress.com/2020/06/jagoguzavigosowaxutosale.pdf
- https://riwozuxel.files.wordpress.com/2020/06/49448317748.pdf
- https://tidokagajiz.files.wordpress.com/2020/07/biduvasizubamumexapiji.pdf
- https://cdn.shopify.com/s/files/1/0432/1204/6491/files/gujogigotikop.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdf
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/51220103530.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
- https://cdn.shopify.com/s/files/1/0432/1555/2674/files/vetav.pdf
- https://cdn.shopify.com/s/files/1/0432/8800/2710/files/73775609458.pdf
- https://cdn.shopify.com/s/files/1/0428/7977/8979/files/pevivugisakawig.pdf
- https://cdn.shopify.com/s/files/1/0431/2937/2832/files/subuf.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005547.bin` `ac70ce0455cf35ccab218a483b0bd2cff394692d7fb4b47770ef316809de7981`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5547	5404 bytes
`font_01_sfnt_off000067b4.bin` `eae21c127fddf62c61897b9821b9994c99c12db2655a2e96680819789d9540ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67B4	8700 bytes

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