Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4e0c823377fe3e…

MALICIOUS

PDF

38.0 KB Created: 2020-09-12 17:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44fbded2b71058a0002072aa91cb0810 SHA-1: aa71a58e95272fe45571728e5b998ab29925680e SHA-256: 7e4e0c823377fe3e5ddc79834560cd20ac02cf7b06399a04cd6eff98755454ac
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links redirects to a known malicious redirector infrastructure. This suggests the document is designed to act as a link farm, potentially leading users to malicious websites or further payloads. No scripts were extracted from this sample.

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.link/pify?keyword=spreadsheet+for+mac+air
    • http://xemofisep.ckrubbertracks.net/uploads/1/3/1/0/131069860/tugivu.pdf
    • http://files.ohiocensus.org/uploads/1/3/2/6/132682076/6433606.pdf
    • http://rixixu.harringtonlanefarmsvillageshop.com/uploads/1/3/1/4/131452903/b6263.pdf
    • http://nodedenu.acamusic.org/uploads/1/3/1/4/131410685/a1807043c70810.pdf
    • http://tulikejo.milesalumniatl.com/uploads/1/3/0/9/130969216/7975358.pdf
    • http://files.penangbtc.com/uploads/1/3/0/7/130776484/8f19265bd94b8d.pdf
    • http://teranu.coonrapidscrimeprevention.org/uploads/1/3/0/7/130738918/milewimo-zezivodugujej-lizinijimav-dapakut.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/fibukozetodurotofokoloxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/47818998058.pdf
    • https://static.usrfiles.com/ugd/6cfc61_18e3f83e683643ab88b24ae7aaa899ad.pdf
    • https://static.usrfiles.com/ugd/bfbc46_1781e23e09aa498c8d06fc8fd6c45d05.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_off000056ff.bin
5f2dd5bcc987b6f05015483477572cae36a15b5f1719fffba7dfacc527b4a101
pdf-font-stream PDF embedded font (sfnt) at offset 0x56FF 5464 bytes
font_01_sfnt_off00006970.bin
0d5344b66c2243a8af7511904b4f392f0b0ad4f2d4bc0e5d1e397bdcfc8f30d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6970 10016 bytes