Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0089b09bfc03352…

MALICIOUS

PDF

250.6 KB Created: 2020-08-01 23:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feab9dcb840270494a7b98b8d7a17814 SHA-1: 936eb3c39e5f88a17ec8f108bf160e8a4e57ac29 SHA-256: d0089b09bfc0335214a3ba064394790a9a775a3b3d889f79e4d7f57c05a46897
60 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 'https://ttraff.com/pify?keyword=hailstone+sequence+java'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the redirector. The file was generated by wkhtmltopdf, suggesting it might be a generated document rather than a traditionally authored one.

Heuristics 2

  • 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.
  • 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=hailstone+sequence+java
    • http://files.kategater.com/uploads/1/3/2/6/132696465/gexodufasu.pdf
    • http://files.modernbarandhome.store/uploads/1/3/0/9/130969706/nikurilidexubavejema.pdf
    • http://files.clickcouriers247.com/uploads/1/3/0/7/130738835/8849626.pdf
    • http://files.milandragicevich.com/uploads/1/3/1/1/131163878/boridozapofopu_fuselituzubegoj_wasomikuw_wexapa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/vasivinire.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/tolefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22537170944.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/75213007999.pdf
    • https://cdn.shopify.com/s/files/1/0433/6471/2616/files/78679331552.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/kudobo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/17578434922.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/prot_paladin_talents.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/65359383020.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/dekivuwixetolamosowobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000360cc.bin
b5fe289775850e65a69cc60b626f15f444860935c5a39e68bdceae7a33bdcfb4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x360CC 7896 bytes
font_00_sfnt_off000340c7.bin
42d11a5b12db0a584027d06197ee34ee8c3840e665434101524b8c418837ba5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x340C7 4804 bytes
font_01_sfnt_off000350ee.bin
05a9d2007ec6d9dd5d9cc52cde88f1f347f4ee36ee2dd568965000e31ffdb9da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x350EE 6424 bytes
font_03_sfnt_off00037878.bin
39f1c781cfa13a125f22bacc68e43682d53bfc32059aae2c810a00e4260b7ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37878 20232 bytes
font_04_sfnt_off0003b500.bin
f3924d3052bdd58ac5b2ff47e0342b06d993b147285ed9505db80abae70f86c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B500 16500 bytes
font_05_sfnt_off0003cb9a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB9A 4324 bytes

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