Malicious PDF — malware analysis report

Static analysis result for SHA-256 5562c570ae032715…

MALICIOUS

PDF

41.8 KB Created: 2020-08-04 09:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29c90f1562a33d6f78cd229787c32176 SHA-1: 62ccff63629e87a017d1f77884a13109fa315f20 SHA-256: 5562c570ae032715ca49dd75020cb97a7e7e93f463acd10e3371d1285bf99bed
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document's primary purpose is to redirect users to malicious sites. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The document body is heavily obfuscated, but the presence of the redirector URL is a strong indicator of malicious intent.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=architecture+without+architects+pdf
    • http://files.unidadepastoral.com/uploads/1/3/1/4/131437351/195585ef.pdf
    • http://files.solez4real.net/uploads/1/3/1/4/131438056/banege-wuxutevovupim-dovutal.pdf
    • http://files.krittermall.com/uploads/1/3/2/7/132710753/58d1e24.pdf
    • http://files.iamwhatiart.net/uploads/1/3/1/4/131453924/3400365.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3294478915.pdf
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/jedogilukojokarojewejut.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1928/files/54107632127.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/suluzanosamarow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/56383398902.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/63465426330.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/54572246319.pdf
    • https://cdn.shopify.com/s/files/1/0430/1016/2837/files/50082668390.pdf
    • https://cdn.shopify.com/s/files/1/0429/9970/9855/files/zewope.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/ponotatejoni.pdf
    • https://cdn.shopify.com/s/files/1/0439/5371/7406/files/90528044639.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/55968190212.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_off00006602.bin
87f4059cafc57a544bf832fb380303e5fe820af27bb34bc5580c618869d27750
pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 5292 bytes
font_01_sfnt_off00007811.bin
efdfe29dada7075a2d342a90d72095c8f5b839de5fe1795ca8b65010c702cd88
pdf-font-stream PDF embedded font (sfnt) at offset 0x7811 9940 bytes