Malicious PDF — malware analysis report

Static analysis result for SHA-256 a201b01b0ec0167b…

MALICIOUS

PDF

46.6 KB Created: 2020-09-06 01:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aecf4fb19b6b3b4601b6cafc7d930d7 SHA-1: 65516a5295eff0e052c5e6122767d301a2e1e76b SHA-256: a201b01b0ec0167b4f00b6eb695fbe55198b7b62cf58182ba41279f59e405eab
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a redirector disguised as a driver download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary link leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of links, likely for SEO manipulation to increase visibility of the malicious content. The document body contains garbled text but includes the primary malicious URL and several benign-looking PDF links.

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=bluetooth+driver+for+windows+10+desktop
    • https://static.usrfiles.com/ugd/8acad3_811c4e6d2c6d40679336e3164165caa7.pdf
    • https://static.usrfiles.com/ugd/4542d9_b444a30eeb1a4144b0067a22d59d7eaf.pdf
    • https://static.usrfiles.com/ugd/97368a_5ca23ccf169d4c7baa59f67a740fbb4e.pdf
    • https://static.usrfiles.com/ugd/296484_44085e9b96a64c46a16df26f8a130a5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b5273dffdb441f7a8ceb13b5a741aba.pdf
    • https://static.usrfiles.com/ugd/2e16aa_a158d3d75dbe4e4a99b998d2440b2b7e.pdf
    • https://cdn.shopify.com/s/files/1/0435/8399/6063/files/nerutokote.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/21931087276.pdf
    • https://cdn.shopify.com/s/files/1/0432/7161/8723/files/aspen_hysys_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/65297459405.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/budget_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/away_in_a_manger_pentatonix_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/c_p_snow_two_cultures.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_off00006a0c.bin
489cbb6c6273534c81b1bbf734e446723ae0bd7672cd9f24a149782e4cc5f080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0C 5260 bytes
font_01_sfnt_off00007c07.bin
633006a6865d17ad6e2a993a1a56fa87533bfdf63fbdfde0eaf9395c8bc67468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 10720 bytes
font_02_sfnt_off00009f84.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F84 4324 bytes

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