PDF malware analysis — malicious · 3f14e76cac66de25

MALICIOUS

PDF

41.2 KB Created: 2020-09-10 11:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 012f4ec2ce03101079049d8590df441d SHA-1: cee49881f043a745d9ba97e228ff74ed6dcaaf87 SHA-256: 3f14e76cac66de255f1e39544e7c90529843c3226f30dab4efbbe22d080bc42c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.club/wix?keyword=multiplication+of+polynomials+worksheet+for+grade+7`. This URL is likely part of a phishing or scam campaign, attempting to lure users with seemingly educational content. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous other links, many pointing to `static.usrfiles.com`, suggests a link farm or a method to obscure the primary malicious destination.

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=multiplication+of+polynomials+worksheet+for+grade+7
- http://tobawoma.labordebeefalofarms.com/uploads/1/3/0/7/130775436/5798383.pdf
- http://files.codetrainingandconsulting.com/uploads/1/3/0/7/130775519/4e0c08fda.pdf
- http://files.bigtimbercattle.com/uploads/1/3/1/4/131437246/1606641.pdf
- http://rasiwi.order526.com/uploads/1/3/2/6/132683014/7caa1d.pdf
- https://static.usrfiles.com/ugd/8bf3fc_bda03da71123420e8aa06795a2714957.pdf
- https://static.usrfiles.com/ugd/df4650_407fb87fc9204fe29aad5a2c78b20608.pdf
- https://static.usrfiles.com/ugd/1decf9_ec065a1b94694734822b821784e5fb74.pdf
- https://static.usrfiles.com/ugd/6908d7_930267aee9bc49b4a91f410a3ede28b6.pdf
- https://cdn.shopify.com/s/files/1/0433/0926/9156/files/love_island_pie_game_answers.pdf
- https://cdn.shopify.com/s/files/1/0434/3644/1752/files/risk_assessment_report_template_word.pdf
- https://cdn.shopify.com/s/files/1/0466/2840/5413/files/riwimijemugopedasu.pdf
- https://cdn.shopify.com/s/files/1/0431/7439/6063/files/formule_aire_d_un_cone.pdf
- https://static.usrfiles.com/ugd/a32c20_a7dac17245cf4d2e80196cb110902455.pdf
- https://static.usrfiles.com/ugd/e02969_2cfe4ab7b73245a1924a3394c0a4cc1e.pdf
- https://static.usrfiles.com/ugd/135178_11fb894a906d4f48ab22acdf7620b79b.pdf
- https://static.usrfiles.com/ugd/b7ab08_4717a68d9fe44309ac6359224f6a36f8.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_off000061bb.bin` `3b7c4ad6a7b5167d34869bf164b7e75e84635cd165f02272c22b9b501c2eacab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61BB	5912 bytes
`font_01_sfnt_off000075e1.bin` `eb6676234b620eb51c0e6a8eb7a1c27c15913ca362d7714e1427b5d3d2a4fa04`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75E1	9828 bytes

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