Malicious PDF — malware analysis report

Static analysis result for SHA-256 253d6d7034712e4a…

MALICIOUS

PDF

43.4 KB Created: 2020-08-14 00:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723b68cc25a5adb4c699da4776fd6dcb SHA-1: 6768f4aa6a32acde4af32ab3b5d918fc23d7287e SHA-256: 253d6d7034712e4abf357f4a0b0af52739f750758184a387e1b12c7e03b72c32
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, which is known malicious infrastructure. The document body and embedded links suggest a lure for a "Larousse french english dictionary apk". The primary malicious IOC is the redirector URL, which likely leads to further malicious content or malware download. The PDF structure and embedded links indicate a social engineering attack to trick users into visiting a malicious site.

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=larousse+french+english+dictionary+apk
    • http://files.eumckids.com/uploads/1/3/0/7/130738719/kerubu_mapowutat.pdf
    • http://files.alininspirations.com/uploads/1/3/1/4/131453645/dacebe4e.pdf
    • http://files.therealequestrian.com/uploads/1/3/1/3/131383760/24965411.pdf
    • http://files.jdouglasburton.com/uploads/1/3/1/6/131606121/zodagireta_jepivazezenesu_dunuvobed.pdf
    • http://files.foxchapelnewcomers.org/uploads/1/3/0/7/130776131/kizetukuxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1562/files/displacement_based_seismic_design_of_structures.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/67704229039.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/8202778726.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5686/files/baixar_livro_temperamentos_transformados.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/10274008475.pdf
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/jatenufivu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/adventures_of_tintin_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/46872199974.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/86585460656.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/lajipiximu.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/90158483214.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_off000063b1.bin
9a9dbb21e251ddd81a8fcb3cfe4d4c54016500c87072e277ab745a583f4f3765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 5524 bytes
font_01_sfnt_off0000767d.bin
13b9d5073a735678c72dd63534bd7202609c98247e6408528c60aba7c9b606a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767D 13316 bytes

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