Malicious PDF — malware analysis report

Static analysis result for SHA-256 4540ef2d068f0194…

MALICIOUS

PDF

47.5 KB Created: 2020-09-02 16:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cc7817276732badb862816bb865ece0 SHA-1: 5272863470736b8cc1e1a4f78db0a7daaf07b8d9 SHA-256: 4540ef2d068f0194e032691571ed6b7ef74dedd56606611adc614b7c8e5dae2e
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily garbled, contains text related to drivers and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely for SEO manipulation to increase visibility. The SE_QR_LURE heuristic suggests a QR code might be present, further encouraging user interaction. The primary attack vector appears to be a lure to a malicious website.

Heuristics 4

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.cc/wix?keyword=driver+asus+x455l+windows+10
    • https://static.usrfiles.com/ugd/cece23_1bc92580171446bf97eaa89f31a3bc53.pdf
    • https://static.usrfiles.com/ugd/e9cba9_6c3fa136fadd42709b60788171062bf8.pdf
    • https://static.usrfiles.com/ugd/804ff6_7805af69a17e4f5aac3fd58170385d14.pdf
    • https://static.usrfiles.com/ugd/b8c837_abb20bad16374a96ba6a072e9a25c470.pdf
    • https://static.usrfiles.com/ugd/764aaa_c9c7a07d53794c79a299840715af983a.pdf
    • https://static.usrfiles.com/ugd/7598fa_75dac9f8a9c345c7a5962865f881f752.pdf
    • https://static.usrfiles.com/ugd/3eed2b_4d8ee26859a44392aa7f01bd0b706afb.pdf
    • https://static.usrfiles.com/ugd/4c7633_62abe409a77b47cf98e6c4c99b735394.pdf
    • https://static.usrfiles.com/ugd/defcb2_1550e3fc5fe3431da8a6e7e9a41c1e9b.pdf
    • https://static.usrfiles.com/ugd/5a1791_64e86a325a8d48bf8da04a02a87028f3.pdf
    • https://static.usrfiles.com/ugd/ea78e0_aa0a7888957a4e4294ac36cae52d0b8c.pdf
    • https://static.usrfiles.com/ugd/735189_b9c1f7900a92421385657bf97f4b33e5.pdf
    • https://static.usrfiles.com/ugd/2d1648_82d2315911c94ccfa08c1993b5b1b28b.pdf
    • https://cdn.shopify.com/s/files/1/0435/4008/6935/files/sogibofawakonerej.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/67228296961.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_off0000614a.bin
15c1eb686cbe11b9c331c2544ddf1cc31931c05d13d64bfc835f5fc6c5e6a16d
pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 5248 bytes
font_01_sfnt_off00007351.bin
1a3d2068ef301819fa065f205d8607e7d5ea4060563e289392736b63a96cad74
pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 14624 bytes
font_02_sfnt_off0000a140.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA140 4324 bytes