Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56eca19ac6c88d2…

MALICIOUS

PDF

39.5 KB Created: 2020-07-31 13:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aadad51213308114a96f4ecc6dbd66f SHA-1: 3c1d4d04c6c7fdb4e472ea4d074258f73bda234d SHA-256: c56eca19ac6c88d215317c4b70606515f065fa0fba640ec6717197880c153a2e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains keywords related to book downloads, reinforcing the lure. The presence of multiple embedded URLs and the critical redirector link strongly indicate a malicious intent to redirect users to potentially harmful content or phishing sites.

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.ru/pify?keyword=peter+drucker+managing+oneself+pdf+download
    • http://files.amandatsam.net/uploads/1/3/1/4/131409597/fexavulaxuvusu.pdf
    • http://files.revolution-ent.com/uploads/1/3/0/9/130969489/webadolurajebex_laweduwupufuma_todimaze_dasoxalidinit.pdf
    • http://files.eddingtonfirecompany.org/uploads/1/3/1/4/131453934/c6593545b1.pdf
    • http://files.hopeforhispaniola.org/uploads/1/3/0/7/130775384/wozeminibanogojepuwi.pdf
    • http://files.camppepper.com/uploads/1/3/2/3/132302913/1217584.pdf
    • http://files.revolution-ent.com/uploads/1/3/0/9/130969489/webadolurajebex_laweduwupufuma_todimaz
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/10144136870.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/10878859711.pdf
    • https://cdn.shopify.com/s/files/1/0440/3757/0710/files/54774143741.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1741554469.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/revumaxobujarex.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/dudotazajozigifagofepi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/butasawowagisejut.pdf
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/7350615236.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/74940861514.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/gopurevemi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/43351288013.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/sakod.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/66874859827.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_off00005c43.bin
ce4534b443368681ad77628b02a6e64d10151f81e044fe98e71468d59385e77c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C43 5512 bytes
font_01_sfnt_off00006ef8.bin
7aee0721065e1530582e7d425db9848772a01a167b089d5ee380cd716fac2579
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 9792 bytes