PDF malware analysis — malicious · a7abf55f8a55ed5d

MALICIOUS

PDF

42.5 KB Created: 2020-09-04 23:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bea61ca2b056dd99cff0f900afacd2fc SHA-1: 34c1ff95dfdc1c6da67ba10b1ca9abb13e66babc SHA-256: a7abf55f8a55ed5d2c6c466d15b4a9faeed71ffc6a84e2b366e5d26f1ba0a9b7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious due to a high number of embedded links pointing to redirector infrastructure. The primary malicious URL identified is https://ttraff.club/wix?keyword=xem+bong+da+tv+apk, which is likely used to lure users to malicious sites. The document body contains garbled text but also includes the malicious URL and several benign Shopify URLs, suggesting a link farm strategy.

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.club/wix?keyword=xem+bong+da+tv+apk
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/47681691411.pdf
- https://cdn.shopify.com/s/files/1/0437/4488/6945/files/dmv_permit_test_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0433/1424/9886/files/nazasazopivo.pdf
- https://cdn.shopify.com/s/files/1/0434/3706/4344/files/minugosafutirafalesi.pdf
- https://cdn.shopify.com/s/files/1/0435/6374/5441/files/manualidades_reciclaje_de_botellas.pdf
- https://cdn.shopify.com/s/files/1/0437/1739/4586/files/tebunasupezerugamibitin.pdf
- https://cdn.shopify.com/s/files/1/0431/4211/9592/files/36260098483.pdf
- https://cdn.shopify.com/s/files/1/0440/4209/2694/files/74988891248.pdf
- https://static.usrfiles.com/ugd/b8c837_9457d1d0d431470e8844057789c5ded9.pdf
- https://static.usrfiles.com/ugd/65e777_30dc08cb1bbc4bb48590717634c1aac0.pdf
- https://cdn.shopify.com/s/files/1/0431/0745/1041/files/batik_in_sri_lanka.pdf
- https://cdn.shopify.com/s/files/1/0440/6598/0581/files/lijefejomapijalotaxaru.pdf
- https://cdn.shopify.com/s/files/1/0439/3671/0824/files/dilabifabumuretobam.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000474f.bin` `95b8098a4042feaabcbc2eb97379a5d053fb975780bc29df41deb7d226d425c1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x474F	3136 bytes
`font_01_sfnt_off0000527b.bin` `91f51e838b57d9fe425b9a87fd8c8028a157627c56964ec31aa9293cab0f75cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x527B	5216 bytes
`font_02_sfnt_off00006431.bin` `a965177a0b069c07e8c2f54de8f4846b7ef8c1809dcbad11b65e54649d92d3c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6431	10072 bytes
`font_03_sfnt_off000086ea.bin` `9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86EA	16036 bytes

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