PDF malware analysis — malicious · 2cefe1a502e39fed

MALICIOUS

PDF

46.7 KB Created: 2020-08-19 01:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 80d978f55b062de998186985f9ac20cf SHA-1: 748c0ab5c89cd3d9d065b14c31970a0d58e4a86c SHA-256: 2cefe1a502e39fed92fa9ffb2589ed1342d0b3365333f5f570ea8d3acdf06d22

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files. One of these links, 'https://ttraff.ru/pify?keyword=critical+thinking+reading+comprehension+worksheets+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous external links suggest a link farm or redirection tactic to distribute malicious content or lead users to phishing sites. No scripts were extracted from this sample.

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=critical+thinking+reading+comprehension+worksheets+pdf
- http://files.texasgbb.org/uploads/1/3/1/4/131406966/fisunifuxumizap-xusuniput.pdf
- http://nukor.josephinewang.net/uploads/1/3/2/6/132682646/raruwojodotame-kamufabud-zurivad.pdf
- https://cdn.shopify.com/s/files/1/0429/2755/4723/files/87497048001.pdf
- https://cdn.shopify.com/s/files/1/0428/3236/3676/files/setamurebedaxovu.pdf
- https://cdn.shopify.com/s/files/1/0430/0580/4698/files/cancer_types_and_treatment.pdf
- https://cdn.shopify.com/s/files/1/0433/3751/5176/files/wurinezipet.pdf
- https://cdn.shopify.com/s/files/1/0433/4603/4853/files/maguxug.pdf
- https://cdn.shopify.com/s/files/1/0431/0892/5600/files/duzerowal.pdf
- https://cdn.shopify.com/s/files/1/0433/6048/5541/files/zafuwifutifedufodubuvujo.pdf
- https://cdn.shopify.com/s/files/1/0431/5031/1579/files/tafis.pdf
- https://cdn.shopify.com/s/files/1/0430/3428/0090/files/84208782920.pdf
- https://cdn.shopify.com/s/files/1/0432/2567/7982/files/sabuguj.pdf
- https://cdn.shopify.com/s/files/1/0432/1335/7211/files/celta_course_trainee_book_download.pdf
- https://cdn.shopify.com/s/files/1/0441/2515/9576/files/20527287101.pdf
- https://cdn.shopify.com/s/files/1/0440/2269/4038/files/19931669312.pdf
- https://cdn.shopify.com/s/files/1/0433/9502/3013/files/restart_kindle_paperwhite.pdf
- https://cdn.shopify.com/s/files/1/0428/8125/3535/files/51413953645.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_off000076f1.bin` `9bd3a35b81832e83c8545d6bd539562fd66aa860fa9363854d50b98ca510bd88`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76F1	5632 bytes
`font_01_sfnt_off000089f1.bin` `6d10d3a54281dcce7fef604c25df6b6484f6b10555027e1465bc082206ba9c5e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89F1	10364 bytes

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