Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae7d32ad6d97575…

MALICIOUS

PDF

37.7 KB Created: 2020-08-12 15:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c43d760d2e0eeeb7213e6fa6cff6972 SHA-1: 441a2a755bb80d57c42f5413657f0e16e42208cb SHA-256: 8ae7d32ad6d97575e4625c6bcfa9430f5d12dcdcff2fcea76600a3c20a6b72f5
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 pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.com'. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=rugarli+cardiologia+pdf', confirming its role in the attack.

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=rugarli+cardiologia+pdf
    • http://files.icaplondon.ca/uploads/1/3/1/4/131406149/86826c99.pdf
    • http://digelu.dianartist.com/uploads/1/3/1/4/131408024/pawup.pdf
    • http://sajexed.freezerlink.com/uploads/1/3/0/9/130969744/safomukuxovip.pdf
    • http://files.frankklohr.com/uploads/1/3/1/4/131437119/8938845.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/bejogokarolumeji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/52140773120.pdf
    • https://cdn.shopify.com/s/files/1/0435/1344/6564/files/68165191143.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/pinajabidalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/wixobiwowudaganumabos.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/tevarebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/60141898757.pdf
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/est_to_china_time.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/tiratuzodititafibikar.pdf
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/85774757927.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/dufaxaboxebaregudix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0831/8878/files/juzekidigawirejuso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/timunusurakilunufiniz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ad7.bin
d1367eb00fdfc6025429cdbdc68e97bd88ae44e5b2b939bde9e7bfc331d6a02d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD7 4732 bytes
font_01_sfnt_off00005afb.bin
f46c50b4468e429c9dc14d70052557d96915bcc9004f44ae90c403e667082f07
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFB 9624 bytes
font_02_sfnt_off00007bca.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCA 4324 bytes