Malicious PDF — malware analysis report

Static analysis result for SHA-256 2180d04e789a04d3…

MALICIOUS

PDF

40.5 KB Created: 2020-08-29 03:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76bf199ce9ebf4a38d3805074fd4805d SHA-1: fbeceb57f648af49d9c02fdd29785e9cfb85f9a8 SHA-256: 2180d04e789a04d3c1332593154a8c4311c14cb86401d2988496e7dbac0defd9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a book download. This indicates a phishing or scam attempt. The file also contains a large number of external links, characteristic of a link farm, further supporting the malicious intent. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious URL is a strong indicator of malicious activity.

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=%25C3%25A7eviriyle+%25C3%25B6%25C4%259Fren+kitab%25C4%25B1+indir
    • https://static.usrfiles.com/ugd/b8c837_166c583fa7264da5955d4ece513af4a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_f191ca419bf448cb9b0ea12e7cecb6fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c0ff9be2dd34bbea5a35923720e707a.pdf
    • https://static.usrfiles.com/ugd/b8c837_175f96dd976f40d58580415c47c74b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_1db9cf71629548d7b3dc077b23ff0c00.pdf
    • https://static.usrfiles.com/ugd/b8c837_aac472d0d2e94c5cb07ef860891dd7ab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/megoxakaxodunakonusapu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/bijanowusomesamufexipat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/87543484430.pdf
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/ejercicio_aerbico_y_anaerobio.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0c2275576d54cdbb059520f99d8ca0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9015b1e3454d4fabb526a9633a00aa3b.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.

FilenameKindSourceSize
font_00_sfnt_off00005ad5.bin
4409f018783203f4e94a3ba92cf7a181a3f676b6b6224407d043d957344c94b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD5 5500 bytes
font_01_sfnt_off00006d22.bin
8cce4bf0b01652b05badbb5e97cbe7ba1dc09c4a39290d115973cb8510007fc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D22 12164 bytes

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