Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9d5ce50adce863…

MALICIOUS

PDF

63.7 KB Created: 2020-08-24 01:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cecb06fd6230751649d754dbe875c0d SHA-1: 51fba29ce55827303e83f51d02dc7a36005dfbbf SHA-256: 9f9d5ce50adce86386ef1858be9cc1bed401eb5359b61e16b6fb83a4aa1ad571
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain a URL that is also present in the heuristics. This suggests the document's primary purpose is to trick the user into clicking a link that leads to malicious infrastructure. The presence of a call-to-action phrase further supports this. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=imsai+arasan+23m+pulikesi+movie
    • http://files.occasusliteraryjournal.com/uploads/1/3/0/9/130969211/logexugusil_vipidujize_nawapofuxu_jolabuv.pdf
    • http://winixewut.ericaleahwood.com/uploads/1/3/0/7/130775451/fonigerava.pdf
    • http://files.well-estar.com/uploads/1/3/1/6/131637034/91a0067.pdf
    • http://files.calvarylutheranscottsbluff.org/uploads/1/3/2/7/132711999/6d8d1fe350.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/13344422383.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/noxowujivividu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/mijogajevajiwalivil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/tukijalutixowux.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/19144239122.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/zudutabajugomam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3712/1951/files/blender_deform_to_curve.pdf
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/dirty_grandpa_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/7402/5640/files/days_of_the_week_worksheet_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/tigivorodijijan.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4764/files/modelo_biopsicosocial_en_trabajo_social.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1106/files/32198225011.pdf
    • https://cdn.shopify.com/s/files/1/0435/9231/9138/files/95746560047.pdf
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/generac_pressure_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/13967764790.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/
    • https://cdn.shopify.com/s/files/1/0432/6624/4764/files/modelo_biopsicosocial_en_t

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000d2ba.bin
310056c5ed3f4848aa73998f48774344b16b901a60c5884565e35cd592406b6a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD2BA 18740 bytes
font_00_sfnt_off00006912.bin
5ba1df3b2062e1e7a0bdebfd02deb7fcf0aca93ffe2f9364d439e1e764954bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6912 5464 bytes
font_01_sfnt_off00007bf1.bin
05d348b2cf4df498429b007228b0f13d0b94b30f4e8830bb612e33fd797c4445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF1 5324 bytes
font_02_sfnt_off00008df1.bin
2cdef5ebfba4bcfe6c3c6a4aac940c25970ededf39a19fb94e59de256869bd70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF1 14084 bytes
font_03_sfnt_off0000afdc.bin
527396f6e9bfd89865a9264dba0036992470095f3124e704e7197832779e3ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDC 10156 bytes

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