PDF malware analysis — malicious · 7b4dd68fc903c35f

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 02:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ae113a842732fdb097668cfae805033b SHA-1: 66ca5e00344212f1c8ffa8fac00d1b4213aa2507 SHA-256: 7b4dd68fc903c35f50e4db9d7809e39db2837661ff9f110dcc802e18ee87a6c8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to legal documents and the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted from this sample.

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.ru/pify?keyword=court+of+appeal+rules+2020+nigeria+pdf
- http://ridurol.carriagesatbriargate.com/uploads/1/3/1/6/131606201/nonezafofizivugel.pdf
- http://files.sitemuse.org/uploads/1/3/1/6/131607010/fanedimawopo_wuxudaranu_nakesawapakamot_kilaviwizikuwal.pdf
- http://files.beminent.com/uploads/1/3/2/8/132814589/2982178.pdf
- http://fujatugut.svfmcoalition.org/uploads/1/3/0/7/130775768/nozazoj.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gipal.pdf
- https://cdn.shopify.com/s/files/1/0443/8907/3062/files/amar_ujala_newspaper_file_download.pdf
- https://cdn.shopify.com/s/files/1/0432/2308/9307/files/nusijakojodobuxi.pdf
- https://cdn.shopify.com/s/files/1/0435/1705/1048/files/headplay_se_v2.pdf
- https://cdn.shopify.com/s/files/1/0432/2865/9874/files/apostrophe_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0428/1312/8867/files/rubakido.pdf
- https://cdn.shopify.com/s/files/1/0437/0300/9430/files/12259348811.pdf
- https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bolaxoxumilelunogaxi.pdf
- https://cdn.shopify.com/s/files/1/0437/3653/1095/files/oxy_acetylene_welding_equipment.pdf
- https://cdn.shopify.com/s/files/1/0431/7567/4012/files/sabamijevoj.pdf
- https://cdn.shopify.com/s/files/1/0435/1275/8426/files/lakowanax.pdf
- https://cdn.shopify.com/s/files/1/0435/5942/0063/files/bikud.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_off00006568.bin` `983e51762403cf2d8eb3d961b6091a113b6f2f379da8808a51227bd1c1d400eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6568	5388 bytes
`font_01_sfnt_off000077cf.bin` `ca46b9cd196a12efed81be16a524089644f1b001cfd9e580d0fbe4014330307a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77CF	10240 bytes
`font_02_sfnt_off00009a96.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A96	4324 bytes

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