Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6c421a4305f752…

MALICIOUS

PDF

73.4 KB Created: 2020-07-25 10:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f28f40768a0fbcecfa8410c71a88ed7 SHA-1: 3fb026a9111344ed1fbdfe576cf1f92b25606b9a SHA-256: 7d6c421a4305f752bbbfda270a27e5afc3d62d89d6a3e7430ef0877de556eb92
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious infrastructure, indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to 'modul akuntansi keuangan kelas 11 pdf'. The PDF_SEO_LINK_FARM heuristic further indicates the presence of numerous external links, likely for SEO manipulation or to host malicious content. 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.cc/pify?keyword=modul+akuntansi+keuangan+kelas+11+pdf
    • http://files.modernliftestablishment.org/uploads/1/3/1/3/131380847/5202342.pdf
    • http://files.thesjrphotography.com/uploads/1/3/0/7/130739398/xizawovoxod_nagomajus_mimuwitu_jujuwo.pdf
    • http://files.onpointprimarycare.com/uploads/1/3/0/7/130776591/durab-dapozofesidezag-kitodujaxume.pdf
    • http://files.y4f.co.uk/uploads/1/3/1/8/131871786/kixokus-temeteboxonoro-besawulix-pumifuxejiz.pdf
    • http://files.lwvchampaigncounty.org/uploads/1/3/2/3/132302768/5760672.pdf
    • https://cdn.shopify.com/s/files/1/0432/0506/6907/files/laguvozefetulesuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/tijugegatabowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/44177284068.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/zujapekopibevejej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/gemikomotowopaxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/tomesopo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/tubigigizeziz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/rozefilip.pdf
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/60764181286.pdf
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/50351420705.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9728/files/7140229726.pdf
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/83590733081.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_off0000d733.bin
5d485f28e53809f1fd71113f92902ef61e2aa49e494ada1af65e6ae6b0bce2a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD733 5116 bytes
font_01_sfnt_off0000e8c3.bin
281b900ab33ad7ba1585ddddad6ea8e0cd814e82d418a40cc8dae4716f372c85
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 15168 bytes