Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb514eaccaacf57e…

MALICIOUS

PDF

39.5 KB Created: 2020-08-24 12:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aea2f3d5ac750312ba8d7e407660146 SHA-1: 41c51cd4f87d72a01c40b3d0e520a491c3b7074f SHA-256: fb514eaccaacf57e69347383af96956500f39a822f53543431a807190a2f32b8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to academic results and the malicious URL, suggesting a lure to disguise the malicious intent. The primary attack vector appears to be social engineering via a deceptive link within the document.

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=rmlau+back+paper+result+with+marksheet+2019
    • http://kabed.shimmerandspice.com/uploads/1/3/1/4/131407406/mezixaridipatim.pdf
    • http://files.stfeichinsns.com/uploads/1/3/1/4/131438111/solotebibuzukotuv.pdf
    • http://zikizazid.stjohnsepiscopalchurch.org/uploads/1/3/2/7/132740805/jifeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/dugisiseduxiwasixida.pdf
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/armas_nucleares_en_el_mundo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/26516028562.pdf
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/98351570911.pdf
    • https://cdn.shopify.com/s/files/1/0433/4167/6694/files/84919234211.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3381/files/fixuvozufoboru.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/41667610714.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/wuweloj.pdf
    • https://cdn.shopify.com/s/files/1/0440/1525/5710/files/antivirus_avast_full_version_crack.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/automobile_engineering_ebook_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/84133961288.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5698/files/70099096215.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/mivijopipaka.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_off00005ae2.bin
59a7dac67da657ab60a8bb77f237ea5d7c598d68bba6452b19928ef87bbfe78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE2 5956 bytes
font_01_sfnt_off00006f10.bin
7455468941ce6d82a3646516347b35dfdad02e85a94692e6d63f6d8f65687f5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F10 9964 bytes

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