Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6942badd875612a…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 19:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8463393c84bad1ead2bb626f438e8822 SHA-1: adc816985d4e04d2a3b3f6a6b0da7b04ffbe286c SHA-256: d6942badd875612a848f30adb1039dfc2914ca6be0039a60b84657c795e3532f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a clear lure related to unlocking Android device administrators, directly linking to a malicious redirector URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a broader campaign to distribute malicious content. No scripts were extracted from this sample.

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=como+desbloquear+el+administrador+de+dispositivos+android
    • https://static.usrfiles.com/ugd/b8c837_f4afea57049f47549d6eebe7b958a90e.pdf
    • https://static.usrfiles.com/ugd/c1615c_ce5a1d0ceb6d45a7852b57c46d9b1ec9.pdf
    • https://static.usrfiles.com/ugd/b11f6d_e0f0f9d19849429f850c2fe2daf28807.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed20c1791e7246ed816be19494ce6b07.pdf
    • https://static.usrfiles.com/ugd/d5415a_61f549934fc34e0a9c477e85212a8a39.pdf
    • https://static.usrfiles.com/ugd/b8c837_25f82092e7784951a2056ef9bbc2701e.pdf
    • https://static.usrfiles.com/ugd/b8c837_c19b3e9060094166a77f5fa6be57616d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0990046c9ea74b949eaad5d8f831e0b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5bff551fbbd4fc29a7de37c78ab62e0.pdf
    • https://static.usrfiles.com/ugd/c5d40f_5597762f3f22430a83efdc513f8aaa51.pdf
    • https://cdn.shopify.com/s/files/1/0441/4291/9832/files/gudawopitu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4283/files/81199184365.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.

FilenameKindSourceSize
font_00_sfnt_off00005f09.bin
eeaf30f197290ecdd668d04948295505a46ec7b812b3b1f5328aed524f375d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 5336 bytes
font_01_sfnt_off00007111.bin
3bdb54a8345e4647eb5c4c6a3e6f4f6db8900d932cfa2c20725ccd4f82c36beb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7111 11296 bytes
font_02_sfnt_off000095a3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A3 4324 bytes

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