Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b35b334a660d85b…

MALICIOUS

PDF

45.0 KB Created: 2020-08-21 04:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e34d47703c90711b1547d06d2a526f7 SHA-1: 0e35079a3bef1440f39cebc1a40186e01e2b881d SHA-256: 1b35b334a660d85b71928443f3c2432823449a5a77cf8bfb9d0366a8bd73d30c
120 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to multiple external URLs, one of which is identified as a malicious redirector. The document's content, including the embedded text "Goodbye 2018 song", is likely a lure to encourage clicks on these links. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=goodbye+2018+song
    • http://files.ecounsellingwesterncanada.com/uploads/1/3/1/4/131407802/bda728e.pdf
    • http://bikuko.sepamujer.org/uploads/1/3/1/1/131164250/karogoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/rimepali.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/6362559701.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/gegetibemugudumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/23694199880.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/26271745081.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexuxedixu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/styrene_acrylic_copolymer_emulsion.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_off00006586.bin
20a239188ec294b683e586189bc3f1127737e7fc442a38288b18b30efe5d35ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 5448 bytes
font_01_sfnt_off00007844.bin
f25dc5a22c5b077787d7f264e824a6356f53a9ff3c766f860efab6d5654ef519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 15532 bytes

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