PDF malware analysis — malicious · dee684b66124bd86

MALICIOUS

PDF

43.3 KB Created: 2020-08-05 14:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd795ed9b288506e815df19770626c9f SHA-1: 8f107f4e761badc536e875958b7d875843907f6f SHA-256: dee684b66124bd86820bcd2eb2b9296892f8dfcea8cfee18ebd629269f592789

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body, though heavily obfuscated, also contains this URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious sites.

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.cc/pify?keyword=active+and+passive+voice+formula+for+all+tenses+pdf
- http://files.cardconnectscal.com/uploads/1/3/1/4/131455463/4056291.pdf
- http://nenuvuwut.lorenasantacruz.com/uploads/1/3/2/6/132681556/bewuviradit.pdf
- http://files.stclairslsc.org/uploads/1/3/0/8/130874524/zazaxekasovirugukew.pdf
- http://files.la-fll.org/uploads/1/3/0/9/130968935/2817256.pdf
- https://cdn.shopify.com/s/files/1/0435/2871/6439/files/xofumuwotusixisevisul.pdf
- https://cdn.shopify.com/s/files/1/0427/5296/6812/files/42814516828.pdf
- https://cdn.shopify.com/s/files/1/0432/1699/4466/files/29842996953.pdf
- https://cdn.shopify.com/s/files/1/0434/0413/2508/files/multiplication_and_division_worksheets_for_grade_3.pdf
- https://cdn.shopify.com/s/files/1/0431/7623/1063/files/nafikopej.pdf
- https://cdn.shopify.com/s/files/1/0449/8885/8536/files/honeywell_th8320u1008_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdf
- https://cdn.shopify.com/s/files/1/0428/7833/7187/files/53657368727.pdf
- https://cdn.shopify.com/s/files/1/0431/6404/1373/files/givifazerezukavapagagirid.pdf
- https://cdn.shopify.com/s/files/1/0432/0477/2000/files/31577608367.pdf
- https://cdn.shopify.com/s/files/1/0434/0655/7347/files/belajar_trading_cryptocurrency.pdf
- https://cdn.shopify.com/s/files/1/0430/1327/5811/files/64330535225.pdf
- https://cdn.shopify.com/s/files/1/0433/0304/3230/files/46904513353.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_off000069bc.bin` `3eb862df18ab856802e4ec3272e55ceb28254aa72029f40aa8b50d1aea783489`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69BC	5352 bytes
`font_01_sfnt_off00007be5.bin` `e8e3bc5729123412d72821761229272a98176716bdc1b9a59f0e8c52b70fe5c8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BE5	11008 bytes

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