Malicious PDF — malware analysis report

Static analysis result for SHA-256 b38634c288534a02…

MALICIOUS

PDF

46.3 KB Created: 2020-08-14 00:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d3e6fdade548331e69a890ead9ad93f SHA-1: 7c0f2aa5e2ffb772d33b61a29fdf80381170b5df SHA-256: b38634c288534a02dfc7c408b578862478d1e15fe895627da3798280c5367140
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=gmr+infra+analyst+report'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to the redirector URL and a benign-looking PDF, suggesting a lure to external malicious content. No scripts were extracted, limiting further analysis of execution behavior.

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=gmr+infra+analyst+report
    • http://diwaw.deafplanetsoul.org/uploads/1/3/2/8/132814194/d5e7835.pdf
    • http://files.machining-technology.com/uploads/1/3/0/8/130874655/gisezelizamuk-datubare-renesu.pdf
    • http://putuba.brokenbarrelhardcider.com/uploads/1/3/2/7/132710621/tijoretomi.pdf
    • http://files.bellbrightaussies.com/uploads/1/3/1/4/131406800/jepil.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/js_random_integer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/87132814495.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/branding_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4053/0854/files/c_programming_for_arduino_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/67003975842.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/islamic_banking_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/auckland_city_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5039/files/fomijogusikado.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/numaxeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7624/files/ruteweja.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/25438793276.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_off00006a21.bin
158d1bd6b119049bae21eeff95863a23c294fceba6fcb771394d79acf4a894a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A21 5180 bytes
font_01_sfnt_off00007bb6.bin
33c61e0376a27be3531ae19804cd462f3ea8dbd67330708cd1908e0f9d48dadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB6 15384 bytes

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