Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8d80383502e468f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 12:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 788bc34eeb349b861d897213137d10e1 SHA-1: 80bef490538f1b6c179f5ebf7bda9eac6637430a SHA-256: b8d80383502e468f7c2f72b22bb8338ebb278ec9bacc2fc64bcfd25c48fef807
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=vsco+x+mod+apk+terbaru', is flagged as a malicious redirector. The document body, though heavily corrupted, contains fragments of text and URLs that align with the heuristic findings, suggesting a lure to external content. 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.cc/pify?keyword=vsco+x+mod+apk+terbaru
    • http://files.waysideresources.com/uploads/1/3/1/4/131407687/nonelosovabimo-gotolax.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/fosetetegijikekutorut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/vimidowolurodi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/6180185651.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/63734671727.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/85099023673.pdf
    • https://cdn.shopify.com/s/files/1/0437/5291/5098/files/mugimabamuviwekadekixoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0447/2933/5962/files/23752497141.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/90885874291.pdf
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/74795995044.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_off00005a67.bin
cbba697ccc914e99ed85e8dfa3178aed4c5e73f14bcf5870f5c9b6d814c2e0ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A67 5152 bytes
font_01_sfnt_off00006bea.bin
6924b846edfa4c3e9734d248f982ba209c52637149f7a6111126f45e8f234bb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEA 10540 bytes
font_02_sfnt_off0000900d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 4324 bytes

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