Malicious PDF — malware analysis report

Static analysis result for SHA-256 caed222de4020832…

MALICIOUS

PDF

42.1 KB Created: 2020-09-08 19:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d979872cdfccc08fd8cddb9ef781515c SHA-1: b55e3734114095857f313b4584b521ab66b90167 SHA-256: caed222de40208325a844aa9dcfff118066214183ac91fc56fefcc26dab20b0f
128 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading 'portable bittorrent software free'. This suggests a social engineering attack aiming to trick users into visiting malicious sites under the guise of a software download. No scripts were extracted, limiting the analysis of the payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=portable+bittorrent+software+free
    • https://static.usrfiles.com/ugd/b77b08_d7bb32c428294c438d061feecf05d61f.pdf
    • https://static.usrfiles.com/ugd/9f2514_71d55d7eebe64dd2beee07a9ab20ec2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2221ff361a9486cbb9e7216a1bcb6bd.pdf
    • https://static.usrfiles.com/ugd/0adedf_8ae808b6356a44e88832fd47faeb07c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_047b736365034e24a6aa527cd62a058b.pdf
    • https://static.usrfiles.com/ugd/140efa_45492b206e144d9483580167719b9bfb.pdf
    • https://static.usrfiles.com/ugd/253000_6f7eae15ccab427eb588fecbeb11add4.pdf
    • https://static.usrfiles.com/ugd/6f58fb_ceaf0fdd4101498eb6921d45aaf71a6d.pdf
    • https://static.usrfiles.com/ugd/01bc73_dbabefb9756545c7b411407bbe91ce9b.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/basedujop.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/extrinsic_pathway_of_apoptosis.pdf
    • https://cdn.shopify.com/s/files/1/0440/7682/6789/files/kabbalah_magic_spells.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/38999012576.pdf
    • https://static.usrfiles.com/ugd/229b11_34459e4e86c34b018410cd97bdad5c82.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddc0d5fcb8a44494abef368e060e3a4e.pdf
    • https://static.usrfiles.com/ugd/5bf82b_c2d8d63fc955494385b71db626a325e8.pdf
    • https://static.usrfiles.com/ugd/dbbfd0_04c145ebacc64e25bc7ebc8cc94e81b4.pdf
    • https://static.usrfiles.com/ugd/d78803_2d376d79ba954ebc8d9b9024f3401af5.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_off00006602.bin
ac26ab5a5e01aa51c2722adc41edd2cafe9960a725177f4a41565bd2042251ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 4992 bytes
font_01_sfnt_off00007719.bin
1e61171dc2f12dee8ec416e17bc50d16ac636db6b057a4ef5c8fe8f2091c5207
pdf-font-stream PDF embedded font (sfnt) at offset 0x7719 10680 bytes