Malicious PDF — malware analysis report

Static analysis result for SHA-256 238ccc746cd004cf…

MALICIOUS

PDF

46.2 KB Created: 2020-08-10 03:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53cf2b2e58eb12d90166031aa8a55cbd SHA-1: 1b3aa831b48a63da5b1205c999f4a8bd7255ea4a SHA-256: 238ccc746cd004cf3c6a4187f2b62ab9a6667b2532fe79ee835d6f8942ca57e6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body also contains the URL https://ttraff.com/pify?keyword=elettaria+cardamomum+medicinal+uses+pdf, which is likely the initial lure. The file also exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDFs, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=elettaria+cardamomum+medicinal+uses+pdf
    • http://files.iwritebookspub.com/uploads/1/3/2/8/132815806/3148142.pdf
    • http://magutam.junctionworkshop.co.uk/uploads/1/3/1/4/131453870/440c7a.pdf
    • http://files.pencilworksbyjoyce.com/uploads/1/3/1/3/131381640/zorolef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6062/4549/files/kymco_people_150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/sulezarajov.pdf
    • https://cdn.shopify.com/s/files/1/0437/0599/1322/files/63780804548.pdf
    • https://cdn.shopify.com/s/files/1/0438/3342/6082/files/english_spanish_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/1_800_892_2253.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9953/files/ielts_reading_answer_sheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/78104165742.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/zetoxekipapuwisagug.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/66069617850.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/tulasufafuvadaduborekozo.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_off00006692.bin
13a2b082fcd38023abc392fa5d4289e1e9578a57e65d95910ca605cd92bac0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6692 5256 bytes
font_01_sfnt_off0000781f.bin
9573bcdf21c7ac80e854ea4e173b04122924729cb120cb76c06ec0dfd1dbb6b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781F 4744 bytes
font_02_sfnt_off000088d4.bin
4b270beb0d0e40d90cea4a8b888fe580ccf619caa1b971fa85883f567d6144a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D4 10140 bytes

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