Malicious PDF — malware analysis report

Static analysis result for SHA-256 4815ee3c6d2fcb67…

MALICIOUS

PDF

49.4 KB Created: 2020-08-29 16:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74d9f7671746718d83338e8faed24b35 SHA-1: 050bec166ca14e3d216dfb886477b513b9ad4af4 SHA-256: 4815ee3c6d2fcb67e27fc8bd023236f0d8992dc0a45518bf9779e4b5eedcac3d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=the+fill+handle+copies+____'. This indicates the document's primary purpose is to redirect users to a malicious site. The file also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for this assessment.

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.cc/wix?keyword=the+fill+handle+copies+____
    • https://static.usrfiles.com/ugd/b8c837_8b05a0a6ff51488e9516e0d1cbbee83e.pdf
    • https://static.usrfiles.com/ugd/77d535_a53a5bc74b2d4367a189cf3245073423.pdf
    • https://static.usrfiles.com/ugd/bf650e_f00c311fdd924745ac37f1b76522aa44.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/starcraft_2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/dibovajipave.pdf
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/bible_for_java_nokia.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/81029322786.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/visonupewepamuxi.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8bec08b0a62465bb2743586959c450c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6714d82fa35f44c6a625d57ceb2ad1df.pdf
    • https://static.usrfiles.com/ugd/b8c837_424092784b1441f19ed5e9047d8dc79f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97f7c3d3ba34ff09a3bffde9f8bd792.pdf
    • https://static.usrfiles.com/ugd/b8c837_291db2f67b824b52b040b8c96eab7052.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/pepipi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9565/8389/files/22887349937.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/39296922573.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0534/files/jelidikuzaxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/jaxidekawoxumugujin.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_off0000787e.bin
375894394a9878111109a2d48ffa6b02585c3546e45269cf424d06101c868684
pdf-font-stream PDF embedded font (sfnt) at offset 0x787E 5124 bytes
font_01_sfnt_off000089f4.bin
cfc952ac43dad8755f41e2d588ea1d992da87cc8f6c7533205ba7c6a45fe11cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x89F4 14656 bytes