Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2da4020771bd8a…

MALICIOUS

PDF

34.9 KB Created: 2020-08-11 20:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f5fa7d74505a78660f45f93b06a35b SHA-1: 16a263167b4fb095c8e655ad9f7566575332c685 SHA-256: 1e2da4020771bd8a2624bf8611f0f8516f1f6a07d9934b4d9e183e56d0233459
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, a common tactic for phishing and malware distribution. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. The document body and embedded links suggest a lure to download a PDF, likely containing further malicious content or leading to exploit delivery. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for 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.cc/pify?keyword=hunger+games+trilogia+pdf+ita+gratis
    • http://files.fredfredas.com/uploads/1/3/1/3/131381480/3fc6c8f1c.pdf
    • http://nosoza.tntcenter.com/uploads/1/3/1/3/131383483/6890458.pdf
    • http://files.elinatinsky.com/uploads/1/3/1/3/131380625/zevevugoniletad-baramag.pdf
    • https://cdn.shopify.com/s/files/1/0437/6805/3909/files/dopedabiditujadon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/jedofadasakop.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/tebutufivimoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/famous_autobiography_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/server_2012_r2_iso.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/zunoju.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/murray_lawn_mowers_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0435/6967/6451/files/1936695179.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/31664202488.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/xuxifuniralu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/catalogo_bticino_peru.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_off00004afa.bin
00907a2c7e27245aa39e504db2e7d6d5e9e2f3deab6409092b0f89fabc917402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFA 5320 bytes
font_01_sfnt_off00005cf9.bin
efb5b6ac9e741e244294181f8b359daf250dc9eef0bccd14e0791f5bfbb123aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF9 9840 bytes

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