Malicious PDF — malware analysis report

Static analysis result for SHA-256 3164fc2ec45072ab…

MALICIOUS

PDF

39.2 KB Created: 2020-07-28 01:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a869f98678a5c791d6b01c8e38930648 SHA-1: 1253f9d718a55668a5dd66dc36878d8e46012826 SHA-256: 3164fc2ec45072aba3f919fb407ec497630639caa477e8fce97efcf9ddcdf811
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.cc. This indicates the document's primary purpose is to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.cc/pify?keyword=a+spoonful+of+sugar+clarinet+sheet+music
    • http://files.theinkparlor.com/uploads/1/3/2/6/132682110/53c852250d.pdf
    • http://files.markdalebaptist.org/uploads/1/3/0/9/130969798/sefisewupovanev_zafokinijoj_kelibugu_befako.pdf
    • http://files.susmanosextendidasmexico.com/uploads/1/3/1/6/131606782/1803965.pdf
    • http://files.uoflelsb.org/uploads/1/3/0/7/130776393/bagupema.pdf
    • http://files.uoflelsb.org/uploa
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/kinobibajej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/97686813413.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/37046921828.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/83346140509.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/donapabewojamira.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/45111799557.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/83703253309.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/86329278146.pdf
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/genoxomipupowogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/2150653108.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_off00005943.bin
db41529dcc3de8200a0901f27b503b630c8c877bb9e690655943405bb82fae51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5943 5300 bytes
font_01_sfnt_off00006b1d.bin
39e65619929acc3ca4146e9de55f5262fd4dc69432eaea4a4454c4e9a958c54b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1D 10652 bytes

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