PDF malware analysis — malicious · cdedcd6ab429f9eb

MALICIOUS

PDF

58.8 KB Created: 2020-09-02 11:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c28d6d8cd24afaf597a88fe02e2d9866 SHA-1: 6fd9cfbf9921ad18c91cff7dbcad4bb547bcb351 SHA-256: cdedcd6ab429f9eb6e5b5fcda916945443a6ec30187c6d574847664896d6d337

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 'https://ttraff.club/wix?keyword=kathi+mela+kathi+tamil+album+songs'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking URLs hosted on shopify.com, likely part of the link farm.

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=kathi+mela+kathi+tamil+album+songs
- https://static.usrfiles.com/ugd/3f8d85_d9402962a21b4922a7797ebf3c28af0f.pdf
- https://static.usrfiles.com/ugd/eed56f_66f2bebc5f01463cbbebedee66b18ce4.pdf
- https://static.usrfiles.com/ugd/685707_7ed4acf64d014975b52c46b594203973.pdf
- https://cdn.shopify.com/s/files/1/0432/2630/0575/files/80469770294.pdf
- https://cdn.shopify.com/s/files/1/0428/0742/7238/files/83429449054.pdf
- https://cdn.shopify.com/s/files/1/0431/7505/1424/files/2550230739.pdf
- https://cdn.shopify.com/s/files/1/0435/9543/2099/files/agreement_on_safeguards_wto.pdf
- https://cdn.shopify.com/s/files/1/0433/5150/7112/files/68774650023.pdf
- https://cdn.shopify.com/s/files/1/0435/8501/1871/files/zoveteromijipefibog.pdf
- https://cdn.shopify.com/s/files/1/0437/1539/5738/files/9906212557.pdf
- https://cdn.shopify.com/s/files/1/0434/2674/2421/files/fofivimitaviwasi.pdf
- https://cdn.shopify.com/s/files/1/0430/0010/3071/files/zageweke.pdf
- https://cdn.shopify.com/s/files/1/0462/2768/5525/files/schneider_electric_lc1d32_datasheet.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_off00007888.bin` `4bbef897720550baae1f881bdd20bc8f72e6d9867029375d33c643a5b1f3a205`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7888	5176 bytes
`font_01_sfnt_off000089fa.bin` `8106ed343f9674af0dfeda302b291646721460fb2458a555534e4892da342c34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89FA	5284 bytes
`font_02_sfnt_off00009a55.bin` `a1937d1fea05651f654a5cf1fdab3ce2a33a18ff2dbd4d9818505665a7006f87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A55	14872 bytes
`font_03_sfnt_off0000c884.bin` `3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC884	16164 bytes

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