PDF malware analysis — malicious · 389dd8522dc825b4

MALICIOUS

PDF

36.7 KB Created: 2020-08-31 05:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3ad393d3047882bd2c5a09b6aad95330 SHA-1: 73c992ee03d7dcf095f42170ea5c95dcfefdc83f SHA-256: 389dd8522dc825b4cb649b8b84d4e2f74a89607daf0561f38cc13c4dfee37e58

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=a+history+of+western+music+10th+edition+pdf'. This indicates a social engineering attempt to trick users into visiting a malicious site, likely for further exploitation or credential harvesting. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of numerous other PDF links, many pointing to static.usrfiles.com, suggests a link farm or SEO poisoning tactic to mask the primary malicious URL.

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.com/wix?keyword=a+history+of+western+music+10th+edition+pdf
- https://static.usrfiles.com/ugd/9374a7_152cf24236fa485b87647bcbb52f68ed.pdf
- https://static.usrfiles.com/ugd/6da380_dbc270d357c84b139a053ef2de7c6d97.pdf
- https://static.usrfiles.com/ugd/b8c837_b88d3958e0544203acd54e37eeedbea4.pdf
- https://static.usrfiles.com/ugd/b8c837_0e89944775ce4cac9cbbc9645d74763d.pdf
- https://static.usrfiles.com/ugd/b8c837_2d6608b009dd43d7ad134d5df9a149a7.pdf
- https://static.usrfiles.com/ugd/b8c837_b9a69bcc4ee8492594ddbdeac6519153.pdf
- https://static.usrfiles.com/ugd/de65f7_3ddc0629801d47208ff208d99413ca0f.pdf
- https://static.usrfiles.com/ugd/b8c837_fa25e1f126944930bdbefbf180af2a56.pdf
- https://static.usrfiles.com/ugd/d7ba0f_5ca1c5b8890a489c9e965a7006d306ee.pdf
- https://static.usrfiles.com/ugd/4f270c_d58fc77a996242f78c4895dc6c6b17b2.pdf
- https://static.usrfiles.com/ugd/ab922d_b885a9d1091a434d99e6186b9434faba.pdf
- https://static.usrfiles.com/ugd/a771bd_f1202a15c3f94a72a06aa16ee3a42008.pdf
- https://static.usrfiles.com/ugd/eaf48f_190acbb82eac498386465b418d22fd8d.pdf
- https://static.usrfiles.com/ugd/b8c837_52cc22bbb8c04c398fb28627c88c81bb.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_off0000458e.bin` `6f0dc5b09420ada87cd0edb85f213debdf3b671baa6deea1f4e44c2584d19ffb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x458E	5412 bytes
`font_01_sfnt_off000057e4.bin` `36b59a0356bf1982eed41e2c8e40a7ae5293ac0e97844413dcd28c785d6c1d00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57E4	9320 bytes
`font_02_sfnt_off000077c1.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77C1	4324 bytes

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