Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62679799f137cc6…

MALICIOUS

PDF

33.3 KB Created: 2020-08-25 01:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598b347ffa2c6c39159007fd26ee6866 SHA-1: 67568f0e729dc058cf632c8404d4e745d2d430e4 SHA-256: a62679799f137cc6cf4be9471930ef4196bc796379a5e7815896edf7387967cd
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive document body that appears to be a weather report but includes a malicious link. This link, 'https://ttraff.ru/pify?keyword=chicago+weather+report+for+today', is identified as a redirector to malicious infrastructure. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to benign content but serve to obscure the primary malicious intent. The primary attack vector is likely social engineering via a malicious link within the document.

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.ru/pify?keyword=chicago+weather+report+for+today
    • http://files.rentalshowplace.com/uploads/1/3/0/8/130814340/358fb5.pdf
    • http://files.creativationevents.com/uploads/1/3/1/8/131856772/1290035.pdf
    • http://fokiwokuk.elamalawi.org/uploads/1/3/1/8/131856706/9997228.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/soccer_live_stream_tv_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/84222970891.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/xijitepasupatu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/71115250722.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/girerulabelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.pdf
    • https://cdn.shopify.com/s/files/1/0434/1959/9004/files/lofilixoxopafetupinopodig.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/xafer.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/angela_carter_the_magic_toyshop.pdf
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/bojaxediforalo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/gexomedu.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_off00004627.bin
2a3386afa3224d36d179a5bb6a96b1c367b1e73b89c613e40d52e40e6dcfb03b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4627 5304 bytes
font_01_sfnt_off00005841.bin
fd4c06cfd7971ead74584c4726537d8e5e42ca29e7c013c62ece8f2845ced81e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5841 9432 bytes

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