Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63d91a53f1e34ca…

MALICIOUS

PDF

47.6 KB Created: 2020-08-19 20:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0bb784d30b2403cb74f1661e7585e1 SHA-1: e75b93d778be2731658d1d50eabf3d83597053b8 SHA-256: b63d91a53f1e34ca5cda1a9886fe79147d9150933bd24c732e8f1581a5cc7afb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. One specific URL, 'https://ttraff.cc/pify?keyword=chemistry+waec+questions+and+answers+2018', is flagged as a known malicious redirector. The document body, though partially corrupted, contains text related to 'chemistry waec questions and answers 2018', suggesting a lure to attract users seeking educational content.

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=chemistry+waec+questions+and+answers+2018
    • http://lirimedef.iflightbook.com/uploads/1/3/1/4/131437294/6365793.pdf
    • http://vepifawu.deevineimaginations.com/uploads/1/3/0/8/130874388/1613441.pdf
    • http://files.evansband.com/uploads/1/3/1/1/131163920/vowolipovuluwet.pdf
    • https://cdn.shopify.com/s/files/1/0436/7548/4313/files/18097769538.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/bekajiximuzebibaserorap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/funifigobinesorewukazamuf.pdf
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/kabbalah_s_secret_circles.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/7287909436.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8074/files/lusubozodisiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/44180805380.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/weltrekord_boxenstopp_formel_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/bible_commentary_niv.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7317/files/26190535078.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/guponogolivisoxokapelopij.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_off000079e9.bin
cfad8b5cb629ca0ed70ee987a8678c6013fd2e9033317a26bb576a9b673af172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E9 5892 bytes
font_01_sfnt_off00008ddc.bin
d6d3559bf42b2ad57780548c03de634211a2688f96230d615373d01dfbe3e7b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDC 10516 bytes

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