Malicious PDF — malware analysis report

Static analysis result for SHA-256 f313eb402a9284b8…

MALICIOUS

PDF

45.9 KB Created: 2020-08-12 05:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 828d32d3bd4837d98254fbc4bb9c34e3 SHA-1: 8c2622a1418ac484b00000096ace438f6fb6bca6 SHA-256: f313eb402a9284b80edc4b4ba44e2664891d9feff7d21afcbf17f7cb81405bfd
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 resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=buku+agama+islam+kelas+xi+kurikulum+2020+pdf'. The document body, though heavily obfuscated, contains text related to 'Buku agama islam kelas xi kurikulum 2020 pdf', suggesting a lure to disguise the malicious intent. The presence of numerous links, including the identified malicious redirector, indicates a likely attempt to drive traffic to malicious sites.

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.cc/pify?keyword=buku+agama+islam+kelas+xi+kurikulum+2020+pdf
    • http://zajawo.adrianafontes.com/uploads/1/3/1/1/131164250/netozolagili-tatadir-lodudilokokaj-wejis.pdf
    • http://files.erawantokyo.com/uploads/1/3/0/9/130969061/wasiwefe.pdf
    • http://files.greybeardadventurer.com/uploads/1/3/0/7/130775221/zison.pdf
    • http://files.blissfuleventplanners.com/uploads/1/3/1/3/131383892/totizeribex-tuzevu.pdf
    • http://files.listerinfo.com/uploads/1/3/1/4/131407492/6184999.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/nejeseneranisetidulugufo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/39973041272.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/zokere.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/cosmic_glue_strain.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/mammoth_weather_howard.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/yale_electric_pallet_jack.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/43264730564.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/autocad_file_converter_to_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/vawiliviveloxesetazig.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/ramokufewipenegexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/sawenevuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/25338682416.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_off0000732d.bin
81371f2f59c5cb179709826af9ff1eb0084dab5da32de91f7e07528880ba18cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x732D 5816 bytes
font_01_sfnt_off000086f6.bin
b69de5787bb5eb66a5303b421b16c19f34f6fd9edd18bc466466c65ade2cfd02
pdf-font-stream PDF embedded font (sfnt) at offset 0x86F6 10368 bytes