Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2feb8b95ae0496…

MALICIOUS

PDF

39.6 KB Created: 2020-08-19 15:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3dc439e5f677dc1d9d0e5a9f1e3f0b8 SHA-1: ca86c653b103042691e5821b6c6fc4132282aa73 SHA-256: 8c2feb8b95ae049684bcae376fa1d3f6c35e58c6a06d3701be900cd3ffc288ac
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for 'new bhojpuri movie 3gp mp4 hd'. This link, 'https://ttraff.cc/pify?keyword=new+bhojpuri+movie++3gp+mp4+hd', is designed to lead users to potentially harmful content. The document also features a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm techniques used to obscure malicious activity. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=new+bhojpuri+movie++3gp+mp4+hd
    • http://darare.candcclaycreations.com/uploads/1/3/0/8/130813528/zekedesiperewuwe.pdf
    • http://pavujapur.evangelizenorcal.com/uploads/1/3/0/8/130874284/0bdf23b1.pdf
    • http://files.saharasistasols.com/uploads/1/3/1/4/131407974/1c9fada014e6316.pdf
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/budget_speech_2020_south_africa_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/agathiyar_mantra_tamil_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/five_nights_at_freddy_s_minecraft_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0438/1258/5634/files/unir_varios.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/bezidanigexufanuxovive.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/sumopexidof.pdf
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/deratovipereresafova.pdf
    • https://cdn.shopify.com/s/files/1/0430/9601/5002/files/tiveferojife.pdf
    • https://cdn.shopify.com/s/files/1/0449/8666/3070/files/gsssb_bin_sachivalay_clerk_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000487a.bin
0ad8eeb0adc0a6a41c5a697eca08f185b8afccbf42c6f7131fe87e1387c946ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x487A 5544 bytes
font_01_sfnt_off00005b58.bin
75c421192daa23f16c6588ccfad1ae9b365dddbdb25a8b1910058a3dfefe4eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58 9824 bytes
font_02_sfnt_off00007d4b.bin
2730a2bff2b0883a13724b7947804cee3d7d3b8f8dc13d146a190bac3fe5d617
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4B 5724 bytes