Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfeb050cb04dfac5…

MALICIOUS

PDF

39.8 KB Created: 2020-08-15 03:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48dc377782bbe4e5d040158d9263e4ef SHA-1: 42704d7eb82c4e1fadde93cba188802156e020b5 SHA-256: dfeb050cb04dfac5943594417ecf412248bb1958ec221eef398f7bd7b18485b4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=carboline+890+datasheet'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm or SEO poisoning technique. The document body, though heavily obfuscated, contains references to the datasheet and the redirector URL, reinforcing the lure.

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=carboline+890+datasheet
    • http://files.extracoolerart.com/uploads/1/3/1/4/131438038/4115645.pdf
    • http://files.smihaiti.org/uploads/1/3/1/3/131381539/gatubavi.pdf
    • http://files.suzannedemontignycounseling.com/uploads/1/3/1/6/131637136/jizaluvizelukux.pdf
    • http://files.seafom-friendsofmontessori.org/uploads/1/3/1/3/131379375/tatobuj-ranazulov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/dejipewixikogise.pdf
    • https://cdn.shopify.com/s/files/1/0438/3175/4902/files/musicas_ballet_infantil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/249146987.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/guvesovaridola.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/hematopoiesis_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/nugubamamodipumomofezagan.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3302/files/ielts_general_writing_task_2_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/43628100296.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/nufifiruso.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_off00005606.bin
3ad774f45d0634a7484ccf6d251cc02c168bb57017bb54dca8977b2f3dc7755e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5606 1560 bytes
font_01_sfnt_off00005e04.bin
693dacbe3b52be5cbcdfceb5f82dc90a4f94bab8f00f68ec60b59016e3482f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E04 5448 bytes
font_02_sfnt_off00007073.bin
b752dc448b1b862898e674202a6c1db63b7b1acbf5e254bdb81ad440bbbf77cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 9956 bytes

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