PDF malware analysis — malicious · 2c670138f27f6a10

MALICIOUS

PDF

48.7 KB Created: 2020-09-06 02:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb86a8e9b2c397b311becda466264884 SHA-1: 3abb1ce8c2e6fb8af925d3215a82c0e9fe71168e SHA-256: 2c670138f27f6a10f5272c1d4af6edf4b1469ca2391143652f553a341a77ad78

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.me/wix?keyword=bluestacks+4+free++filehippo'. This URL is likely used to redirect the user to a malicious site, potentially for phishing or malware delivery. The presence of a PDF link farm further suggests an attempt to manipulate search engine results or distribute content through multiple links. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=bluestacks+4+free++filehippo
- https://static.usrfiles.com/ugd/a18aa6_e5366f7c12e04494a6485884b6185f8d.pdf
- https://static.usrfiles.com/ugd/87d215_ae144de964f74562b5ad41dbef2cbec5.pdf
- https://static.usrfiles.com/ugd/b8c837_d59cec74088c4297bda894a3449ecb75.pdf
- https://static.usrfiles.com/ugd/b8c837_680cec348eef439dabd0a506550f8eb2.pdf
- https://static.usrfiles.com/ugd/10b03a_6700d05a3d924190b30eda49d9ee0bed.pdf
- https://cdn.shopify.com/s/files/1/0432/2089/3851/files/2299324197.pdf
- https://cdn.shopify.com/s/files/1/0432/2977/3982/files/xusilifunetifawi.pdf
- https://cdn.shopify.com/s/files/1/0439/8471/5934/files/happy_birthday_piano_sheet_music_download.pdf
- https://cdn.shopify.com/s/files/1/0428/7581/4047/files/xosekunejopulusazap.pdf
- https://cdn.shopify.com/s/files/1/0431/8098/2432/files/majufufuxiwumizifilifug.pdf
- https://cdn.shopify.com/s/files/1/0431/5270/3645/files/vobataguvavokoze.pdf
- https://static.usrfiles.com/ugd/fe83c3_ebe3b11fa9214114984d42722541a636.pdf
- https://static.usrfiles.com/ugd/2f8cea_94aa127857634fe9bfff1ff92f2dd2c8.pdf
- https://static.usrfiles.com/ugd/b58d21_4bf03f9f49384b689de0dcaa10d4d473.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_off00007395.bin` `2b6b5fbd8035c4bb7f76df03ddc4ebe21d9661195416ec8371267629498e013e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7395	5080 bytes
`font_01_sfnt_off000084f5.bin` `1e36221d9e1d4eb54997088f47ebc253f653b955b2c5b167736a863de49d14d6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84F5	10096 bytes
`font_02_sfnt_off0000a790.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA790	4324 bytes

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