Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9af813f9f5d155…

MALICIOUS

PDF

46.1 KB Created: 2020-08-21 12:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ed05fb1b6db9a00425180d55b262ee SHA-1: efbbffef449a451761c58ae712410c0e4783873a SHA-256: fa9af813f9f5d155526ba2b5d64405bb9684ccee16e9933600f26079e4d5ef16
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.com/pify?keyword=android+barcode+scanner+to+excel+spreadsheet, which is likely used to deliver a second-stage payload. The document body, though heavily obfuscated, contains this URL, reinforcing its role as a 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=android+barcode+scanner+to+excel+spreadsheet
    • http://sofogez.tlccasolafarms.com/uploads/1/3/1/3/131379730/8438514.pdf
    • http://files.oranmormead.com/uploads/1/3/1/3/131384281/doxipokapidij.pdf
    • http://files.dgordonassociates.com/uploads/1/3/0/8/130874104/fomufunawamiz.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/jipijukol.pdf
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/nepalevekunosomepovekaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/23186107952.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/treble_clef_notes_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4013/6601/files/peter_and_the_starcatcher_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/risedotasasolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/zovexatomomeruvovoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/14258185137.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1468/files/biology_book_4_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/97569979243.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/51812765759.pdf
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/b_boying_dance_video_free.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_off000075bf.bin
8282c3064c2fc6683d6401ea70bfcac7a16278c38b86b94e221743e953b3b21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BF 5360 bytes
font_01_sfnt_off000087e4.bin
01a20756fba5058c50d9acd79a5c57410d559c994e37d2a0060e2c271830d4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 10256 bytes

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