Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad6fb4bf714a39b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-31 18:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a437070ceb548e337694cfcd6d69e17b SHA-1: 5afe2ac201f2ab4a700735e100c505ae5547cb22 SHA-256: cad6fb4bf714a39b76cab8889aa8eef21e6af899b1e03175f26bae9469824a3a
150 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'breast pump manual' and the malicious URL. This suggests a social engineering lure to direct users to malicious infrastructure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=breast+pump+manual
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/mazejibetirina.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/bopuseron.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9011/files/boxenefarivivorulibelizaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/lajowavidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/asynchronous_generator_working.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17238909339.pdf
    • https://static.usrfiles.com/ugd/6240f8_33d06a93806c45ae8fa44420105ba78d.pdf
    • https://static.usrfiles.com/ugd/b8c837_451c69a7ab8d4a5fa28f1bf65de6d96e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce9be25263ae42d2b74b1bbd6293a363.pdf
    • https://static.usrfiles.com/ugd/a771bd_78d198cb5f3f4ceb8c73cd4a20f6f035.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_off00006f69.bin
29a4a6f6d65f84233990b33a70ad687b2cb901e2a6b33f254710f32b53d45c7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F69 4736 bytes
font_01_sfnt_off00007f61.bin
7a756a9447fb09ae613d2414918b87a296a625b6e056e6beee2b95c6d2d53a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F61 10092 bytes
font_02_sfnt_off0000a1e7.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E7 4324 bytes

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