Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b0569103c66d78…

MALICIOUS

PDF

46.1 KB Created: 2020-07-29 03:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cded10420a7e7c040dc31b924bc7792 SHA-1: 6280c9997b0c67c3965fb1468a8a1532234c1d12 SHA-256: 48b0569103c66d78f995b51e78bf82f24bec957c086590327ac73625112d0cc5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=sql+server+express+2012+sp2'. Additionally, it exhibits a PDF link farm pattern, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to 'Sql server express 2012 sp2' and 'wkhtmltopdf', suggesting a lure related to software downloads or updates. The primary malicious IOC is the redirector URL.

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=sql+server+express+2012+sp2
    • http://files.aireenp.com/uploads/1/3/1/4/131453061/132a4e22a02ae7.pdf
    • http://files.dualcredit23.com/uploads/1/3/1/4/131483361/xavezitizawu_kujadewonutov.pdf
    • http://files.wsfishfarm.com/uploads/1/3/1/3/131378779/2554714.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55781022724.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/wepodamexagelipo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/63901983849.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16494210232.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9830/files/wupazalobefutukuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/xefisufavasemazikeku.pdf
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/boduvasazesegatikiluj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/12169966730.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/46036232597.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5020/files/98509720732.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_off00007167.bin
24c6044877f1f100e1c4fd162162dc94f242b53e8f1062f744eeef1104bfe0af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7167 4732 bytes
font_01_sfnt_off0000818b.bin
b398ff38640f7679d781a2f1b33ba9204983a048c81cd2d06754ab795b9f4f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x818B 13456 bytes

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