Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e8797461153dc4…

MALICIOUS

PDF

40.5 KB Created: 2020-08-18 20:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9409fc53bf3038a7756f39bb8626608 SHA-1: dcdd0f2664a967ce2596308b65e61f5bdc122d36 SHA-256: 27e8797461153dc4e7558935154e1473097926a091e48a72b33c42694497c863
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, with one prominent link leading to a redirector known to host malicious content. The document body, though heavily obfuscated, contains text referencing 'adventure time game wizard apk free' and the malicious redirector URL. This suggests a social engineering lure to trick users into downloading potentially harmful software. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=adventure+time+game+wizard+apk+free
    • http://files.rebeccakellyonline.com/uploads/1/3/1/3/131380005/9051669.pdf
    • http://files.truthiflifemin.org/uploads/1/3/2/6/132681415/3563cafcf.pdf
    • http://soxapo.pabaevents.org/uploads/1/3/0/9/130969204/nulubisa_wurepe_sixipo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/fedujuxuzatefogokag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/polajedufujumakozubox.pdf
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/64243542132.pdf
    • https://cdn.shopify.com/s/files/1/0433/2653/7883/files/31178017989.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/29718829700.pdf
    • https://cdn.shopify.com/s/files/1/0436/7004/4825/files/benami_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/33586848924.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/ziwibokufuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/46948082509.pdf
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/29638700559.pdf
    • https://cdn.shopify.com/s/files/1/0434/7012/7254/files/mujedaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/lazunixelokudapirapapat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/tulivopiliwe.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_off00005f84.bin
72c2aafe6ed7de69095b6a8b6ecedbfeec721e173e5efa54937876d12bbd38bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F84 5404 bytes
font_01_sfnt_off000071f3.bin
5d2d38e00b1c9a1a407a2687ae9efff32c01e4e3c2fcf91eabb84805f00626d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F3 10312 bytes

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