Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdeafa7f147051d…

MALICIOUS

PDF

44.6 KB Created: 2020-08-10 16:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 428a9f0201020c0bb8606cd89cad19f7 SHA-1: 7cacb5b7389393ef02388747908f41f749640616 SHA-256: bcdeafa7f147051d81e797780e6d7d5f5a18bbbfc206800a9e18983b1b4271e2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.com/pify?keyword=bosquejos+de+sermones+bautistas+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and other PDF links, suggesting a coordinated effort to distribute malicious content through a link farm. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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=bosquejos+de+sermones+bautistas+pdf
    • http://files.boisgoetrehen.com/uploads/1/3/1/4/131454286/442e688b0c640.pdf
    • http://files.rmhsperformingarts.com/uploads/1/3/2/7/132741029/7099265.pdf
    • http://files.faithutah.com/uploads/1/3/1/8/131857544/f87700c.pdf
    • http://files.startatravelbusiness.com/uploads/1/3/1/4/131453543/ribopusub_jekefederam_bogofowadoku.pdf
    • http://files.stresswiseatwork.co.uk/uploads/1/3/1/6/131607163/faxuvavorano_rasunab_saroxarutenig.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/rudadebeminamebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/pumivilubixoruwitejot.pdf
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/vaperigaxevavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2347/4583/files/boris_yeltsin_biography.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/liboff_quantum_mechanics_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/81779754648.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/46382826696.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/search_algorithms_in_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kesutuzijakakewinepubad.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/fadozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/jibumuzuroz.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_off000068ee.bin
f3c7344a4cb230b1861eb8549484bc7bc7a1d534e26d635fc60edd5cc948480c
pdf-font-stream PDF embedded font (sfnt) at offset 0x68EE 5548 bytes
font_01_sfnt_off00007bb0.bin
6dc34d2e0181ba9bf902077d55bdf3a2b2007bc09b7d8d180d1a38e8a2190071
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB0 13004 bytes