Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49fc09a10172d9f…

MALICIOUS

PDF

50.4 KB Created: 2020-08-20 03:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd085e3fa03208afcc3d31f8e19ad2e SHA-1: efa6d9dcbe99e143f57cd88d966aa1d3f2784498 SHA-256: f49fc09a10172d9f8619198c51eac8a5eeb567e83b487484605f9e43b4d35489
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure related to 'Ntpc admit card sarkari exam' and includes a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=ntpc+admit+card++sarkari+exam'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, one of which is to a Shopify domain. The presence of a visual download button heuristic further supports a social engineering attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ntpc+admit+card++sarkari+exam
    • http://files.moirajo.com/uploads/1/3/0/9/130969551/lonodimojoru.pdf
    • http://files.lambethlarder.org/uploads/1/3/1/4/131453592/gizatilawag_gogasotefotanut.pdf
    • http://files.rowanoaklaw.com/uploads/1/3/1/8/131856815/9d08990.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/55029462526.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/xerekutunas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/ranimofoparapalokimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3645/files/gawidijunelejizijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/bafil.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/76330426654.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/21263893646.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/mavomilagafubuwajiduf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/tanggal_amandemen_uud_1945.pdf
    • https://cdn.shopify.com/s/files/1/0434/7704/1304/files/16968774177.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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a7a.bin
9ada29a6c8493ce07148f2f5e56033da98f06dff8dabb2b1da283ac3fc4f285c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7A 5288 bytes
font_01_sfnt_off00007c5f.bin
4e2b715ddcae43380801c1d982150e21ca520c14ebcfe4305be8caf8ff5a92d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 14740 bytes
font_02_sfnt_off0000aa71.bin
ccc61761941c5f6f0c106375d82e92a03ce6398f445d471f9a7e373d58e6cb1a
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA71 4252 bytes