Malicious PDF — malware analysis report

Static analysis result for SHA-256 282b0415b3bbb09f…

MALICIOUS

PDF

34.8 KB Created: 2020-08-11 05:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fee3041ae6ca83f5b2ed60c6088ecb42 SHA-1: 27b089e94698b9eec90ce5f5195c2eff0e95309a SHA-256: 282b0415b3bbb09f329b6bdb495051ff1c05255c949549122f5d3abba37c71da
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, "https://ttraff.cc/pify?keyword=master+mind+brain+teasers+pdf", is designed to lure users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to potentially malicious or unknown domains. No scripts were extracted, but the presence of the redirector and link farm strongly suggests a phishing or malicious redirection attempt.

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=master+mind+brain+teasers+pdf
    • http://sajite.thenextbigthink.co/uploads/1/3/2/6/132682090/9c9b86f42b5c.pdf
    • http://files.sevenstarsamerica.org/uploads/1/3/1/3/131381946/b611fbf946e4c.pdf
    • http://files.madebyloulou.net/uploads/1/3/1/8/131871891/59bfb6ba928ffb6.pdf
    • http://files.amtboats.co.uk/uploads/1/3/0/7/130739369/ddaad202afb0a2.pdf
    • http://files.mickylynnexecutivetouch.com/uploads/1/3/1/4/131437106/3955282.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/terry_travel_trailer_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91025233068.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9799/files/28897324456.pdf
    • https://cdn.shopify.com/s/files/1/0444/2256/1958/files/mamuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/xameg.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/joxiwitotivabigapewegabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/fepakitedafe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9667/7279/files/piwetaziteze.pdf
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/68853269378.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_off0000494c.bin
b39041e40f2318831faa4f33a1320145ce7a146820e9ae0d9fb64b5377bd7e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x494C 5300 bytes
font_01_sfnt_off00005b2e.bin
89a0ceb7f326bca3e59bd8831ea0f3203e8b63e84103a7ea065b95d65b23fbfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2E 9920 bytes

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