Malicious PDF — malware analysis report

Static analysis result for SHA-256 849de9ef40334dd4…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 00:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be73e5b5dcea95930f9b03fc72e8a202 SHA-1: c14ec7e7e24263028130383fa02fddedfb02a6f1 SHA-256: 849de9ef40334dd45b019bf6494d2417af002eba06107b64bfa5fbb4ea9c59df
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link redirecting to malicious infrastructure. The document body text, though garbled, contains the URL 'https://ttraff.cc/pify?keyword=black+wallpaper+1920x1080+hd', suggesting a lure to download or view content. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=black+wallpaper+1920x1080+hd
    • http://files.yodaveproducts.com/uploads/1/3/1/4/131408100/dotorijawoma.pdf
    • http://rekekewur.artworksgalleryco-op.com/uploads/1/3/0/7/130739564/fiwonadowo-jetulus-negokozanorodi.pdf
    • http://timol.sankeycomputers.com/uploads/1/3/0/7/130776433/dae42.pdf
    • http://lufanopus.xnews.blog/uploads/1/3/1/3/131379759/517ba6.pdf
    • http://nojirir.faithbaptistchurchministries.net/uploads/1/3/1/3/131382092/wezekabax-jijexovowem-tukekawalosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/polavezuwenatigumotebami.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/97021099800.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/puxolobefovabale.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/bowling_for_columbine_script.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/88850202849.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/cantigas_de_santa_maria_music_score_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/pawimajizoduridedumumil.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8752/files/hinario_vo_corrente.pdf
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/bivitexedojutobimew.pdf
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/capitalismo_consciente_john_mackey.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/money_manager_brownie_badge.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_off00005002.bin
331aa7d580885e4faf5fac8eabe5c6ebfd429ac168fba66b49967a8e5743eaca
pdf-font-stream PDF embedded font (sfnt) at offset 0x5002 5376 bytes
font_01_sfnt_off0000626d.bin
a069f1f72acd6859b58706f404c588e5151fb2b839f857e49f39e42f50abe325
pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 13944 bytes
font_02_sfnt_off00008e70.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E70 4324 bytes