Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d25bd127cf93db5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 05:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 484bcfbe8d1074036b017e908c4703d3 SHA-1: 7c3d69180fd78c27d9cf903c5a0f3d55ecd633db SHA-256: 3d25bd127cf93db58bafa24d1b7fcec86bb5f6869e6661eba4b48e16753afed7
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 multiple links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous links suggests a broad phishing or malware distribution campaign.

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=angle+bisector+of+a+triangle+answers
    • http://files.stelizabethrap.com/uploads/1/3/2/6/132695780/40131.pdf
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/daniel_boorstin_the_discoverers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/jenis_jenis_adsorpsi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/12652942976.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/fabelubexalojuwizod.pdf
    • https://cdn.shopify.com/s/files/1/0437/8312/7201/files/car_company_list_with_logos.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/xavixizixafojifuneto.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/58133078730.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebb.bin
0261c5f2ea796bffe59e6b291a259b7c75d6d0b0e43e2af04886be9cd21bc689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBB 5268 bytes
font_01_sfnt_off000060c3.bin
1b701183e4494f05194cd1af667d894d9c3fb9511f56c0905837b072cd00bbef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C3 10036 bytes
font_02_sfnt_off00008353.bin
caa23c05f0ac08194a9b8a9f606fecd1f9f41f6d214920d25577909b7fe72b7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8353 16256 bytes

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