Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a17355c6beba25…

MALICIOUS

PDF

38.8 KB Created: 2020-08-06 06:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9177dce414928fdfb5fe4875fc590e35 SHA-1: e776b75f948cb5c395093e234b0baa5a2da5cd7a SHA-256: 38a17355c6beba25adad5e0f07e6ff8a62392335eeef80af3f9d71bd12788a43
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Dubai metro rail route map pdf'. The primary malicious URL, https://ttraff.ru/pify?keyword=dubai+metro+rail+route+map+pdf, is a known redirector. The file also contains numerous links to PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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.ru/pify?keyword=dubai+metro+rail+route+map+pdf
    • http://files.thenowtrip.com/uploads/1/3/1/6/131637631/2ce117e31e6.pdf
    • http://files.shellystill.co.uk/uploads/1/3/1/8/131856306/petuwusenalogi.pdf
    • http://files.icaisfo.org/uploads/1/3/1/4/131453124/mojofuv_kexina_xasaxaw.pdf
    • http://files.chickenmullfestival.com/uploads/1/3/0/7/130775050/motorazavi.pdf
    • http://files.bauermeistertree.com/uploads/1/3/0/7/130739265/1437142.pdf
    • https://cdn.shopify.com/s/files/1/0434/5053/1990/files/64314197420.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/noxisuzasudifopuxamavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebedaxogatasimilore.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/33610733504.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/47598315295.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/us_cellular_insurance.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32852202686.pdf
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/twitch_emote_count.pdf
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/16216_copperfield_dr_33618.pdf
    • https://cdn.shopify.com/s/files/1/0434/5525/0598/files/wulixoserevobatodebizasin.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/73413561128.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_off000059d9.bin
ab6ef1c0355be49d25cc8793e921bd4f7da7b07baae533bd023c2b997a46ceb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x59D9 5148 bytes
font_01_sfnt_off00006b42.bin
b0d616c458884918cb73cd4400ac0e31fd35ca57ec64c30d94bcd705c400021a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B42 10256 bytes