Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb7c8442ebb5da6…

MALICIOUS

PDF

54.7 KB Created: 2020-08-20 14:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcfd9815c7aeaffd8ce50db708492ff3 SHA-1: 215f343dec8a949e06e2c9b64cc66775009b16c6 SHA-256: ebb7c8442ebb5da6014b13a2e202ce4570ea3444dabab98b9f2e0b8a8d607c38
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link: Malicious File

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'Mindhunter season 2 parents guide'. The document also functions as a link farm, pointing to numerous other PDFs hosted on various domains, likely for SEO poisoning or to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed malicious redirector link.

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.com/pify?keyword=mindhunter+season+2+parents+guide
    • http://piwadi.joytripovich.com/uploads/1/3/1/6/131606289/3476640.pdf
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.pdf
    • http://files.kountrybullz.com/uploads/1/3/0/7/130776182/41b53f51e.pdf
    • http://files.missrodeokansas.org/uploads/1/3/1/4/131482832/3251671.pdf
    • https://cdn.shopify.com/s/files/1/0439/2130/9851/files/30_beaglebone_black_projects.pdf
    • https://cdn.shopify.com/s/files/1/0435/3766/2103/files/alexander_pushkin_queen_of_spades.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/83485092509.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/xidaxamubanavaboji.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/xalogidifizali.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/9335939924.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/58110920092.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/galojagibuvom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/partial_differential_equations_farlow.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_off000096ee.bin
922fdb8008aea494241f7bd9c4083f4eb26f70800477bc5d504e18786ad18e37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96EE 5328 bytes
font_01_sfnt_off0000a904.bin
a666f39de7cf560826ac8c97b58d77590139b0b2aa7743f541458271b0368ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA904 10480 bytes

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