Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5c413fa46da31a…

MALICIOUS

PDF

39.1 KB Created: 2020-08-08 03:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89f9477a774cb11a315570eca3d3b89c SHA-1: af2186fc1ab1c12fb4ae292a98a06ee116693c7c SHA-256: 8e5c413fa46da31a2d99ed09ecee8d0c7e31f4a96fbd57f032816d0e0b5a60f4
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm, which is a common technique for distributing malicious content. The primary malicious URL, https://ttraff.ru/pify?keyword=alter+ego+hachette+c1+pdf, is flagged as a redirector. The document body contains numerous embedded URLs, many pointing to Shopify, but also includes several other unknown URLs hosted on domains like hidefdjs.com, midviewband.com, and thevintagetoyman.com, which are likely part of the link farm infrastructure.

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=alter+ego+hachette+c1+pdf
    • http://files.hidefdjs.com/uploads/1/3/1/4/131407233/pesazoboma.pdf
    • http://files.midviewband.com/uploads/1/3/0/7/130775431/zekotuwuw.pdf
    • http://files.thevintagetoyman.com/uploads/1/3/0/9/130968972/7591662.pdf
    • https://cdn.shopify.com/s/files/1/0435/7046/2883/files/66189993576.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/apbn_2020_disahkan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/xawiwutekeralurosa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/kijonen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zurutadodusabexefiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3452/files/60862562206.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/simagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/python_partition_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/zamunel.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/17539722308.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/nadhom_asmaul_husna_latin.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_off00005c32.bin
6cf4e2b985e28ae02f95e5f01488429e228cbdeb26c27d0f5617fdb7ba94d2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C32 5280 bytes
font_01_sfnt_off00006e2d.bin
a96a51349795fd770d0a97345080c6d2363405d055759c5a2646f9a48807ba1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2D 9816 bytes

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