Malicious PDF — malware analysis report

Static analysis result for SHA-256 3732c0a31dd8417c…

MALICIOUS

PDF

49.3 KB Created: 2020-08-20 01:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3e9d5bc5b4db8c449874ae1b972f724 SHA-1: 3c24d6cc8f66ac9076b55cc762c2c7e65575dec0 SHA-256: 3732c0a31dd8417c0a0676722b957917d3d51f548956806dc0447df7bc864a96
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ksa tourist visa pdf' and the malicious URL. This suggests a phishing attempt to redirect users to malicious content. No scripts were extracted, limiting the analysis of further stages.

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.ru/pify?keyword=ksa+tourist+visa+pdf
    • http://mifexo.rorabnorthbay.com/uploads/1/3/0/7/130776485/8cb2855c297f8e.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/98372108161.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/22176181147.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/52410003680.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/xunavifit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/33448973184.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/ain_t_it_a_pretty_night.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/duvepokoxevirujojujesal.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/spell_check_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/61589746805.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/lufesivinix.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
stream_005_off0000936e.bin
d70656af9df524234f8299532657a1c37c11a4d17f6ea6a16d6ed59dc2cd7284		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x936E 21860 bytes
font_00_sfnt_off00005e8f.bin
186fc02f614dc341df2c939c2c166065bbf23bc01f031e7d4d4537de74bc7e16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8F 5032 bytes
font_01_sfnt_off00006fcb.bin
05e0ba0ba13690e27759f6599002bd47557baa660a605f06acefd355d00f4c5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 10356 bytes

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