Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35267a619d7168d…

MALICIOUS

PDF

38.3 KB Created: 2020-08-07 20:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556a9056769e9e8d58818d4582de1132 SHA-1: 7e37df8e47f9451fc755a17ec15076ba463f5047 SHA-256: e35267a619d7168d2a8d64381d0d0629e034eaa447866156410c1f956982d8f7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to traff.com, indicating a link farm or phishing lure. The document body, though heavily obfuscated, contains references to academic material, likely a pretext to encourage link clicks. The primary malicious URL is https://ttraff.com/pify?keyword=cambridge+english+empower+a1+teacher+s+book+pdf, which is a known malicious redirector.

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=cambridge+english+empower+a1+teacher+s+book+pdf
    • http://files.loukobin.com/uploads/1/3/1/4/131452750/1882643.pdf
    • http://peleza.allisontaylorphotography.com/uploads/1/3/1/0/131069839/tavam.pdf
    • http://files.wingecarribeehealthassociationformen.org/uploads/1/3/2/7/132740905/dorulex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/balanis_antenna_theory_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/css_center_vertically.pdf
    • https://cdn.shopify.com/s/files/1/0434/2965/8790/files/52993935720.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/javascript_random_number.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/pirerenikuluxonefexamul.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/tinkle_magazine_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/70395385779.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/91541261525.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdf
    • https://cdn.shopify.com/s/files/1/0435/9883/9970/files/forero.pdf
    • https://cdn.shopify.com/s/files/1/0434/8873/9494/files/ribbon_in_the_sky_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/laludesubidol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a2c.bin
4105f522d743ed1d9e2f8085aad86805cb996d6c541f67468b2f23829ad0ce64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2C 5728 bytes
font_01_sfnt_off00005d8e.bin
30c9b6b5591a4cbee695276167aed81187b1799d14e9ff8393a091f223f57d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8E 9544 bytes
font_02_sfnt_off00007dfe.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 4324 bytes

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