Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb470e22cc66f668…

MALICIOUS

PDF

73.6 KB Created: 2020-07-14 11:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42b23cee06c3e84ab0c2f138e202a0bd SHA-1: ab66562000295abcce9c84e1773a0ae532c9594e SHA-256: fb470e22cc66f668717f4afaaf22058980c07b4b6f99323452fa443e5bf7a8ea
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign-looking PDFs hosted on WordPress.com and other file-sharing sites. However, one critical link redirects to a known malicious domain, ttraff.com, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or to disguise malicious 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/wb?keyword=reading%20and%20writing%20lesson%20plan%20pdf
    • http://files.martin-land.com/uploads/1/3/1/6/131636584/dubazuwowiwek.pdf
    • http://files.littleriverfarmstore.com/uploads/1/3/0/9/130969503/gazakajosa.pdf
    • http://files.samanthaecooper.com/uploads/1/3/0/7/130739011/xevolabemideluguf.pdf
    • http://files.ecommplish.com/uploads/1/3/0/8/130814926/vuguf.pdf
    • http://files.cowboysmetal.com/uploads/1/3/1/8/131858287/dazugidaj.pdf
    • https://melexiv.files.wordpress.com/2020/06/nusim.pdf
    • https://xoxapuziri.files.wordpress.com/2020/06/95151511764.pdf
    • https://bubopero.files.wordpress.com/2020/06/7228225942.pdf
    • https://jizerorozuwo.files.wordpress.com/2020/06/77352674203.pdf
    • https://pokivuwewej.files.wordpress.com/2020/07/98509048576.pdf
    • https://puponiwil.files.wordpress.com/2020/07/sitapelagelidesaruximaj.pdf
    • https://walumuvov.files.wordpress.com/2020/07/tudil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7814/files/tibusojudozagufaboro.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/zafewuvalofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/35734523113.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/gufoliketik.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/voxidej.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/pivabafunaliretudapon.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_off0000e3a7.bin
53d19fc2feffda735b442713c943792d286e9ce0dd2f0bedf9f733d0737fa212
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A7 5096 bytes
font_01_sfnt_off0000f519.bin
432b3a122bc446272a7f70a70bae0ef9dcb1c63aba92b9a8956d0fa7858119d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF519 10516 bytes