Malicious PDF — malware analysis report

Static analysis result for SHA-256 c827eec04e8304e9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-24 07:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 849e545fabf897718376745268b5af26 SHA-1: 47260b939deec968f8c1e86039989b15e276a76e SHA-256: c827eec04e8304e97b2b8f7ddda95978b08449383778b2ee9bf85b24788beaa6
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 pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking title, suggesting a lure. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=international+migration+report+2018+un
    • http://files.humanities.shenfieldlearning.com/uploads/1/3/1/3/131397946/1664648.pdf
    • http://files.madisonalvarez.com/uploads/1/3/2/7/132740281/01fb0.pdf
    • http://files.nolarichardson.com/uploads/1/3/1/4/131453124/levefis-nisutodimu-lafiluvi-sukuvuvun.pdf
    • http://files.brushdartistry.com/uploads/1/3/1/4/131438557/gojatudunapowu.pdf
    • http://bujibe.fastflyingmarketing.org/uploads/1/3/0/9/130969744/wazedikefopaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/87654716210.pdf
    • https://cdn.shopify.com/s/files/1/0435/8563/4463/files/mga_bayani_ng_pilipinas_at_ang_kanilang_nagawa.pdf
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/how_to_edit_to_word_converter_file.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/firuxuduwovimisu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/22581277752.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/modetigawedipetozuxafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/xorezumimid.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/sindrome_de_burnout_en_madres.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_off00006e2e.bin
7aa21c36f79db024353b2a6735007a8a5a64e4beda302c3a3ee2215181da247b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 5420 bytes
font_01_sfnt_off00008084.bin
4bec266a328bfc457567c948ff4d8a7638070959ff27f293a2f739600443aa95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8084 10568 bytes

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