Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81f56881b4979e1…

MALICIOUS

PDF

42.4 KB Created: 2020-08-31 07:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c3c5833bb5995d503bea3d5ce50557c SHA-1: 7a07e64c9f8013343b3d5ff22cad6a1814699192 SHA-256: e81f56881b4979e1f9cfc2b456e66a31cc169419b21d5d5fa11807c2d10724f3
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious payload. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or to distribute further malicious content. The presence of a visual download button further supports the lure to click the embedded link.

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/wix?keyword=mdmp+steps+army
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/panirubaxeluxobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/zuminawanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/95102976468.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/sakuzilajekodaririmokib.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/newutororogolegezif.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/14955731935.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/31339937200.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/65764685528.pdf
    • https://static.usrfiles.com/ugd/e4ff69_6afca3c710064fdd8eb8d6de81bf46e9.pdf
    • https://static.usrfiles.com/ugd/eb6612_5fdfaf3202874ca781f4cffed5aefc95.pdf
    • https://static.usrfiles.com/ugd/b8c837_c832d220f17643b9b1c72a2132dd6682.pdf
    • https://cdn.shopify.com/s/files/1/0454/2457/4632/files/nugedominumaxegojax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/ansiedad_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/php_parsing_url.pdf
    • https://cdn.shopify.com/s/files/1/0437/4488/6936/files/administrao_da_produo_slack_8_edio.pdf
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/gekomizefate.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_off00006895.bin
eedbdddacdcd89d59a5b0b87390fe7d12cf6551f8a3d8a4a64d299f636a5a6dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6895 5180 bytes
font_01_sfnt_off00007a28.bin
f52f790a431085d8c9d72dfc87359ad30f01a43a7edb455c5bc4da94d675935b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A28 10224 bytes