Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38980b0e388e778…

MALICIOUS

PDF

57.6 KB Created: 2020-09-01 00:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 785392635315953218ec910bd9defd50 SHA-1: 4bfe0c6a2eb9b3f58ec3e8e5b332230b0a12b3ec SHA-256: c38980b0e388e7781a7a911a0a98535ba56d15495fbbb7dd4b72388afacce728
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to academic content, likely serving as a lure. The primary malicious indicator is the redirector URL, which is designed to lead users to harmful content.

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=geometry+a+dilations+kuta+software+answers+2011
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/51370300818.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/android_studio_install_old_ndk_version.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/fivoxijalom.pdf
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/devlin_textbook_biochemistry.pdf
    • https://static.usrfiles.com/ugd/a382ee_586f551873cf455ab4553bcaea96e091.pdf
    • https://static.usrfiles.com/ugd/a91264_963c8ef9d3a44c92a9362a082dfe4feb.pdf
    • https://static.usrfiles.com/ugd/c0b427_97331eb34ebd46b28958c606acfe063d.pdf
    • https://static.usrfiles.com/ugd/b8c837_857fd19f984e4c0fa702c7e3211b0246.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/22635378784.pdf
    • https://cdn.shopify.com/s/files/1/0435/9284/3432/files/accidental_prime_minister_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5749/files/aeronautica_imperialis_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_0847ef4e4e0d4411a063e77542e74fea.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0aabbc553d042b99877955f06c725cc.pdf
    • https://static.usrfiles.com/ugd/2b25b5_2762a51898724525adbc73bc4bf0ed49.pdf
    • https://static.usrfiles.com/ugd/253000_33e4ce1661a2474d8539b6a56c854fd4.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_3c4dd161e539448b804a124af493ce78.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_off000092e4.bin
d735b272dd7c29eca28817a70547ba313b9c190626a15792594ef5654d8bdcee
pdf-font-stream PDF embedded font (sfnt) at offset 0x92E4 5552 bytes
font_01_sfnt_off0000a5d3.bin
cf2811ae2237e390807ba8e56a4879be5b091c93e07d4dd0e4a1ca303ca52b30
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D3 10772 bytes
font_02_sfnt_off0000cab6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB6 4324 bytes