Malicious PDF — malware analysis report

Static analysis result for SHA-256 597e0a1afad92788…

MALICIOUS

PDF

35.6 KB Created: 2020-08-04 20:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b5d1bb63164d87057c03be81a395f4c SHA-1: 70b2acd4afa116d105085617182f50316302b446 SHA-256: 597e0a1afad927882c24ee67152332178fc234b43caef83ae7f645c9a7da1c55
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. The primary link, https://ttraff.com/pify?keyword=jantung+koroner+jurnal+pdf, is a known malicious redirector. This suggests the document's purpose is to lure users to malicious websites, likely for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated.

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=jantung+koroner+jurnal+pdf
    • http://vukate.yvhopheads.com/uploads/1/3/1/4/131438216/45a51f6a4d939.pdf
    • http://files.trailwaybrewing.com/uploads/1/3/2/7/132712093/2585121.pdf
    • http://wadijetip.skateyogi.com/uploads/1/3/0/7/130776486/wubelifaxenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/88118039315.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/vasofudujisiniloju.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/88011253207.pdf
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/bides.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/55439510455.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/2256454363.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/74937402375.pdf
    • https://cdn.shopify.com/s/files/1/0444/8436/2407/files/osteoarthritis_knee_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0433/7054/5308/files/vinaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/85868816445.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_off00004dc2.bin
2d35e1463d5a6b415e1530263e8f8cbd37848e3cf430f88d3cc7df18955b794d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC2 5160 bytes
font_01_sfnt_off00005f73.bin
3ab4713e8dd94030a1fff314dc2bedecec009cb1da773ed8eb123eb6b3bc3c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 10056 bytes

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