Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe428f55cf616c78…

MALICIOUS

PDF

68.4 KB Created: 2020-08-01 12:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78c4ff2083c3847b4ddb2b87e512af60 SHA-1: 689779e23deae9ab0bb96d7f1244298f7f0453c1 SHA-256: fe428f55cf616c78a6e2934aa803a117624b7e747e9d4bc2426cb2b88c5c4fd5
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate PDF downloads, but one of the primary links redirects to a known malicious domain (ttraff.com). This indicates a social engineering tactic to lure users into clicking malicious links. The document body, though heavily obfuscated, contains the same URL found in the heuristics, reinforcing the malicious intent. No scripts were extracted from this sample.

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.com/pify?keyword=fundamentals+of+ceramics+barsoum+solutions+pdf
    • http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdf
    • http://files.rockdogltd.com/uploads/1/3/1/3/131381546/3623590.pdf
    • http://files.francescaterberg.com/uploads/1/3/0/9/130968961/jazajegikuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/sonoguligi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/16622162516.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/zubopuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3496/files/47642405944.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/vixobew.pdf
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/javipepijetefas.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/zagigowejaruwemureguved.pdf
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/nekabimozejep.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_off0000cf75.bin
f0c5dd46915f22823d3340f1d5f460babcd1c3f8557f8ef45476f1731554c29e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF75 5396 bytes
font_01_sfnt_off0000e1b8.bin
ecda01ff31da363b6392b413e0db4f7636677a80965a393ac8836f8a335ddf3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B8 10352 bytes

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