Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e20deac3253301…

MALICIOUS

PDF

44.4 KB Created: 2020-08-13 21:34:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e59f30523161984ef139d36e36ba850 SHA-1: 777f2235a878331009623573518f9022fdaf3104 SHA-256: 93e20deac32533010cb6c1849477088b8fd7fca43ecccec920bb7ae49d04e3f8
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=absorcion+intestinal+de+farmacos+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=absorcion+intestinal+de+farmacos+pdf
    • http://lewup.nancyjmiller.net/uploads/1/3/1/3/131379730/waxofoxajupip.pdf
    • http://jizawaju.bobeads.com/uploads/1/3/0/8/130874493/5277811.pdf
    • http://files.cavanaughcoastalcoaching.com/uploads/1/3/1/3/131381658/9a537087b1d.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1484/files/9156179738.pdf
    • https://cdn.shopify.com/s/files/1/0448/5667/2418/files/wetsand_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7626/files/dnd_xp_5e.pdf
    • https://cdn.shopify.com/s/files/1/0448/4556/4065/files/aiag_fmea.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/41374455205.pdf
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/judarekazixijajewu.pdf
    • https://cdn.shopify.com/s/files/1/0451/1842/3194/files/cattle_breeding_chart.pdf
    • https://cdn.shopify.com/s/files/1/0449/1807/9655/files/beyond_good_and_evil_nietzsche_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/9883655853.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/amnesia_anterograda.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/73975747007.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/1/0448/5667/2418/files/wets

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bb0.bin
e03e8f16566da10fd08dc64244eac99e8e62e84340dee3394b8b3fe271406de0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB0 5432 bytes
font_01_sfnt_off00007dfc.bin
c0fb1f57da5ff83a52882a51012d442f13c440f79f81285a9a43b278dcb5806f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFC 11712 bytes

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